It creates an incentive to create new things and share it with the world, duh.

Do you ask the same question about why we patent drugs?

Walt Disney died 60 years ago. We don't need to incentivize him to do anything.

Are you arguing that copyright lasts too long or that copyright shouldn't exist?

Your prior comment, "human culture is owned by humanity", sure sounds like the latter.

I think copyright is a valid incentive.

I don't think reading books (whether by human or by machine) is copyright infringement.

I think that attaining books that are still under copyright by downloading a pirate torrent is wrong.

I think a machine reading those books by borrowing them from a public library is fine.

I think copyright holders restricting their books from being in a public library is just as wrong as downloading a pirated copy.

I think deliberately reproducing a copyrighted book is wrong, but the infringement is by the person who did that, not by the person who built a tool which can incidentally be used for that.