Every unique culture should have its own dating website. Cultural Marxism is unrealistic and oppressive for most people. Every person has the right to do whatever s/he wants as long as s/he does not unfairly & significantly harm others. Self-defense is acceptable. A bias becomes a major problem when it unfairly and significantly harms another person or other people.
Culture involves these factors: biochemical heritage, race, ethnicity, and genetic ancestry; values, mindset, religions, and philosophies; emotional inclinations and behavioral preferences; historical achievements and failures; spoken and written languages (which includes general languages like Chinese and Spanish and specific languages like math and chemical equations); artistic expression; native lands; etc.
Culture is obviously a complex topic that varies depending on the time period. The development of unique cultures is very natural and typically improves quality of life. On the other hand, one-size-fits-all solutions, a fanatically supremacist ideology, cultural Marxism, and unrealistic solutions for real problems are unnatural and usually degrades the quality of life. The greatest impediments for human advancement are stubborn superstitions, outdated instincts, backward habits, delusions of grandeur, unproven solutions, low intelligence matched with genetic regression-to-the-mean, and other impractical flaws of the human mind.
A unique culture is a diverse and complicated topic that goes beyond skin color, but simple-minded people only understand the obvious, and skin color is a conspicuous feature. The cultural Marxists and the liberal-guilt peddlers incorrectly think skin color is an insignificant attribute. Facts show otherwise.
Some scientific theories believe lighter skin was a recent evolutionary development. People (and their ancestors) who live at higher latitudes tend to have lighter skin or less pigmentation than people (and their ancestors) who live around the equator. The area around the equator is relatively positioned with the sun so that the equator takes in more direct or more intense sunlight. This solar intensity is a combination of the solar radiation’s pathway relative to the earth’s surface and through the earth’s atmosphere. Areas above the equator tend to have less intense sunlight. This means people who have been living around the equator need more pigmentation to protect against sunburns, and people who live farther above or below the equator need less pigmentation.
In addition, sunlight (e.g., ultraviolet radiation A & B) reacts with the human skin and sebum to produce vitamin D3, which is a critically important nutrient or hormone. According to some scientists, sunlight is also important for the proper development and maintenance of human eyes. This could be the reason for why indoor lifestyles that lack moderate sunbathing promote myopia. People who live farther from the equator might have less pigmentation in order to better absorb the less intense sunlight.
Pigmentation is probably the result of multiple evolutionary factors. Another reason for different pigmentation in people is random sexual preferences. All life forms have biases that affect their procreation. Some sexual inclinations are pragmatic, and some are impractical. The obvious example is the male peacock. The male peacock has large and elaborately decorated feathers to attract female peacocks. This decoration is bad for camouflage, inefficient for flying, an impediment for walking and running, and a high metabolic cost. The fancy feather decoration could be an indirect way of showing off the male peacock’s health and fitness, but this method has more to do with artistic appreciation than pragmatic functions. For whatever reason, female peacocks prefer male peacocks with this highly impractical feather pattern.
Random sexual preferences could also partly explain tiger stripes vs. leopard spots; the prominent colors of blue jays, cardinals, zebras, and pandas; and other impractical attributes of various animals. Plants, fungus, and algae also evolved various types of artistic characteristics. Humans also have random sexual preferences. Some cultures sexually select lighter pigmentation, and other cultures sexually select darker pigmentation. This sexual selection is probably based on a funky mixture of both practical and artistic motivations that arise from survival-based genetic combinations and random genetic combinations plus environmental influences. Stated differently, a bias that is for or against lighter pigmentation goes way beyond simplistic complaints regarding racism. Human inclinations are the result of natural developments and/or man-made programming. Partiality could be a good thing or a bad thing.
From a historical perspective, white-collar workers tend to outrank blue-collar workers. White-collar workers tend to work indoors, and blue-collar workers tend to work outdoors. Thus, white-collar workers tend to have less activated pigments, while blue-collar workers tend to have more activated pigments. This easily creates a culture that prefers lighter people over darker people.
Another benefit from lighter pigmentation is the identification of individuals. Lighter pigmentation is better for showing off an individual's unique facial features. This is the same reason for why drawers, painters, or sculptors usually start their artwork with a white piece of paper, a white canvas, or lightly colored clay. A lighter surface stands out from the surroundings and creates more contrasts with other decorations. People prefer working during the daytime or with artificial lights, because the brightness is good for the identification of various objects.
When compared to darker skin, a lighter skin does a better job of highlighting the shape, size, position, and color variation of a person’s subtle facial curvatures, eyebrows, nose, lips, and cheeks. This pattern recognition also applies toward people’s eyes, which have white backgrounds and colored centers.
Why is it important to identify individuals? The identification of individuals is critically important for the development, maintenance, and advancement of civilization. Civilization is based on the specialization of labor combined with teamwork. Specialization of labor requires unique individuals. Teamwork requires the identification of unique individuals. Artistic expression is based on unique individuals or their peculiar ideas. Scientific progress depends on unique individuals or their distinct concepts. Even a relatively simple colony of ants has specialized workers and various methods to identify each other.
Lighter pigmentation is also more effective than darker pigmentation for revealing facial expressions. Advanced communication skills are critically important for advanced civilizations.
Lighter pigmentation is usually bad for camouflage. However, humans don't need natural camouflage when humans could produce man-made camouflage, projectile weapons, and agriculture (e.g., domesticated plants and animals).
There are racist people who use various excuses to justify their crimes against different people. Then there are the idiots, the cultural Marxists, and the God-complex egomaniacs who think their one-size-fits-all solutions are superior, but, in reality, they are sub-optimal to various degrees. Due to plentiful cultural differences, global migration, and international trade, humans worldwide have an increasing need for the acceptance of disagreements in a respectable and respectful manner. “To agree to disagree” could solve lots of disputes and conflicts around the world.