But what good is worrying?

Become vegan and actually act.

However, it does help if you want to minimise your personal contribution towards animal suffering.

Also don't have to care about animal welfare to be vegan

But there's a difference between animals and capital goods producing meat.

The only goal for a farmer is in the end how much money you can make. And yes healthy and happy animals taste better but people buy cheap shit so usually the welfare isn't paid by people.