I mean, you take one look at Greek statues and Roman busts and you realize that people figured how to aim for realism, at least when it came to the human body and faces, over 2000 years ago.
Yet, unlike sculpture, paintings and drawings remained, uh, “immature” for centuries afterwards (to my limited knowledge, it was the Italian Renaissance that started making realistic paintings). Why?
This is incorrect. Not only did humans used to work significantly less and we (the working class, anyway) in the past few centuries have less leisure time than ever, but if anything, the introduction of what you consider “civilisation”, and especially class and money, harmed art more than anything by giving the power and control over it to those who aren’t creating it, and leaving those who are, starving, like the rest of the plebs, or completely undiscovered due to lack of privilege, opportunity, and access.
I stand corrected!