Not having inhibitions about killing is one thing. Enjoying it is something else.

A vet (I mean an animal doctor, that's what we call them) has to be ready to kill at any time, and you wouldn't want a vet who felt unable to do that - but you definitely wouldn't want one who enjoyed it either.

What is really strange is that word "fun". Excitement, exilaration, triumph, perhaps - but "fun"??? My father fought in three wars, in Ireland, in Spain and in North Africa and Italy. He never talked about killing as fun. I don't think he could have understood the very notion.