They creep me out.
But I am fascinated by them. When I was young, I wouldn't be able to even touch the pages of those books with full-page zoom shots of spiders (where they do a closeup on the head). I'd drop the book and leap back. But I still had to look -- so I would get something to flip the page with or just very carefully grab the corners of the page, to turn it.
And I also did the "feed bugs to spider" thing. Spiders are very alien to me in how they move and act and look, so I'm filled with both terror and curiosity.