Why haven't we, as individuals, evolved (by education, if nothing else) to a higher "starting point" emotionally and socially?

Technologically, we’re on an ever-increasing rate of evolution. Fire > Wheel > Vacuum Tube > iPhone.

Culturally (i.e. as groups of people), it can be argued that we’ve seen vast improvements over the course of human history. (Yes, it’s uneven. Yes, sometimes we step back. Yes, it’s slower in some places than we’d like.) Slavery, for example, isn’t nearly as widespread as in the past.

But as individuals, why do we keep hitting the same problems over & again? Short tempers. Cheating spouses. Raising children. Poor communication. Lack of self discipline.

For example, the Bible (citing a historical reference) mentions adultery from x thousands of years ago. Today, we all agree, I think, that adultery is still a Bad Thing. So why does it go on? Why haven’t we as individual evolved past those kinds of shortcomings that have been quantified for thousands of years? Why do we keep repeating those known & documented mistakes of the past?

I’m not talking about passing judgment on people. It’s not about heaven & hell. Just curious why we continue to make the same mistakes as our predecessors. At the very minimum, humans have had thousands of years to work out the nuance on these things. And yet many of us still fail daily at problems that plagued man long, long ago… billions of times over.

I get that religion is a tool to help address this stuff. But look, we’re still using the same texts today that have existed unchanged for millennia. Why haven’t we moved on to substantively different problems? Or eliminated the old ones altogether?