I like spiders because they keep the other bugs from becoming invasive; but there is a limit to my level of tolerance.
The only genus(?) of spider that I have ever been able to hold in my hand
^These are probably the most docile critters on the planet.
@kiwi: When I was much younger we lived next door some college kids that kept black widows (and piranhas) for pets. At some point they got tired of keeping the black widows and set them loose in the space between their home and our home. With nowhere else to go the wayward bastards (the black widows, not the college kids) ended up in our basement; more specifically in the corner of my bedroom where my bed happened to be. We didn't find out about that until a deep spring cleaning. Turned out that I had been sleeping a few inches above the nest for close to a year. I don't know what words my dad had for those guys next door, but if those words were anything like the words he reserved for me whenever I got into trouble (
then they got off far too easy IMHO 
).