Barbless hooks are not widely available here but I'll often pinch or file the barbs down. It makes it much easier on the fish and much easier to release the fish. I don't know about the evolution of fish hooks but I imagine that back in the day, everyone fished for food on the table. They'd throw trot lines out and leave them there for hours/days even, and the barbs would help keep their fish on the line. Nowadays, people fish less for the table and more for the sport and relaxation. We're always in contact with our line so we don't really need barbs. It'd be nice to see a few more people going barbless without having to regulate it.