I understand that, I feel the same way about spiders. I think it's okay to dislike (or outright hate an animal), to think an animal is ugly (which doesn't automatically mean you hate that animal - I love birds, but I think most baby birds, save for baby poultry, are ugly), to have a fave animal etc...it's when you act like your fave animal is flawless or you hated animal deserves to die (just because you hate it or think it's ugly) that it becomes a problem.
Also, if Disney made a bat movie, I'd squeal like a little girl on the inside. On the other hand, I'd expect a lot of people would suddenly want bats as pets. I *think* Disney is making a documentary on bats for their Disney Nature thing...
I kill black widows all the time. No mercy.