I've known people with capuchins and spider monkeys, and honestly they took super great care of their pets (they had giant heated greenhouses with 30' banana and guava trees
).
Personally, that's a bit much for my taste though. lol. Monkeys creep me out. I think it's because they look vaguely human, but not all the way human. Sort of like ventriloquist dummies. *shudders*
I still want me some tegus.