I love them! My fav New Worlds are G. pulchra, A. versicolor, and B. smithi. I wasn't ready for an Old World, but there are some gorgeous ones. Tarantulas are one of the few exotics I think can be kept humanely. Well, females anyway, since we can entirely replicate their natural habitat, unlike most exotics. It just kills me how poorly understood their needs are. They're one of the most abused pets in America (at least), if you ask me!
There was this whole fiasco of someone at work having a Rosehair, and not providing for it correctly. (i.e. just doing what the pet store said, and we all know how knowledgeable they typically are! *derisive snort*) I typed up this five page report on how to take care of a terrestrial New World species... and was completely ignored. Both of the tarantulas he had died.
I don't have any now because of the feeding issue. But I'm still fascinated by them, like you guys! Beautiful, intriguing creatures!