I will make the argument here that left wing ideology is, in a holistic sense, a form of revolt against the natural predicament of the human species, whereas right wing ideology is a form of conciliation with it.

Whenever environmental circumstances become relatively amenable to life and prosperity, left wing ideas start to develop and spread, as there is more room for cultural experimentation and deviancy from the biological norms.

On the other hand, whenever humans become burdened by war, pestilence, famine, and generally difficult conditions, right wing ideology settles back in as the moral matrix that needs to be advocated for us to survive the evolutionary game at the individual and at the group level.

The very concept of left and right, not tied to the French Revolution, but rather as a fundamental psychological inclination, did not even manifest for most of human history, as everyone was simply struggling to survive and, hence, would have naturally adopted views mostly similar to modern day right wing ones: hierarchy, patriarchy, tribalism, theocracy, strict gender roles, and etc. Those attitudes were not an option, you either adopted them, or you were wiped out by those that did.

The unprecedented level of prosperity bought to us by the numerous technological advances created a uniquely positive environment in the last few hundred years. Expectedly, we are also more left leaning now than any other time in history, holding beliefs that would have been though insane by just about any group of people from just a century ago.