Most stuff we use wear out as we do. Every single time we do our thing, we leave a little bit of it in what we made. The soles of our shoes wear thinner, the edge of our knife gets dull.
But some things get better every time we use them. I rode with an Uber driver the other day who had 16,000 trips. You can be dang sure that this gentleman has seen it all, but he also knows his streets, and drives safely. It would be quite hard to teach him something.
Humans, in general, get better the more than they do something. And now, AI has joined that club. Every time you use an AI, you teach it something. Make us (humans) proud.