[solarmist]

Completely ignoring all the other thoughts and comments. And working from first principles.

The human brain is a problem-solving machine; one that is somewhat optimized for connecting with other people (I say somewhat because the social parts are still a very new addition).

If AI could do all labor and creative activities at levels far beyond human levels, then we'd still do many of them to try and understand how they do it. We'd also invent new problems to solve and new ways of interacting with labor and creativity.

It's like asking what rich people do all day. They find stuff to do or make it up. Sometimes that's productive, and sometimes it's destructive. Or another similar thing would be the pursuits of landed gentlemen in the 1700 and 1800s, which invented many of the fields we call science.