Which is worse?
I can remember being terrorized in by a gigantic wolf spider in the bathroom when I was in kindergarten, but nowadays I really don't mind spiders at all. They're kinda nifty. (In fact, if they're fuzzy and have big eyes, I even think they can be cute.)
Snakes, though. *shudder* I'm with Indiana Jones. I can tolerate, like, a snake, if it's small. But big snakes, or especially multiple snakes -- double-especially snakes with slit pupils -- they give me the creeps, the willies, and the heebie-jeebies.