As long as I can keep them out of the house, I'm a live and let live kind of guy myself. I've had problems with mice before, but not since neighbors with cats moved in. Unfortunately, I haven't seen any more skinks, which used to live under my bushes, since then either -- they were kind of neat.

I'm told that raccoons can rip through a roof, but if you don't have that problem, they're really rather cute. The only wildlife I can think of that I'd kill on sight are rats, skunks, and porcupines; rats because they're just nasty, skunks because they're a frequent rabies vector and a hazard for dogs, but not as bad as porcupines, which can do severe damage to dogs.