Earlier quoted context omitted.
The reason Darwin is revered is that he discovered some important emergent structure in natural processes that is not immediately evident from Einstein’s field equation even if it turns out that the latter entails the former. But “we are here on earth to fart around” doesn’t follow.
I will immediately concede I am wrong if you can show me how democracy, monogamous marriages, and a night on the town obviously emerges from darwinism. Or from biology more generally. If you can't use biology to explain society, then based on your reasoning about why Darwinism is preferable to relativity, I think you should reconsider whether or not this is true universally rather than for you in particular.
https://www.scientificamerican.com/article/our-secret-evolut...
Democracy and a night on the town are a little more challenging. Both are actually pretty recent inventions, having existed only for a few thousand years, which is nothing on an evolutionary time scale, and the jury is still out over whether either will survive in the long run. (Personally I'll give you long odds against.) But the short version of the answer is that genes have only very indirect control over the brains they build, and sometimes those brains can have a mind of their own (so to speak) and goals of their own, some of which can be in direct conflict with the goals of the genes that built them. For example, birth control pills are an quite literally an existential threat to our genes. So in the long run one would predict that our genes will tend to build brains that have an instinctive aversion to things like birth control. But the dynamics of human societies are off-the-charts complicated and non-linear, so who knows?