I've never really understood why artists want to use substances to enhance their creativity. Sure, I get the occasional glass of wine when writing's going well. But turning to drink, or to drugs, or whatever, seems to outsource an artist's creativity, to turn inspiration--and therefore credit--over to someone, or something, else. Maybe it's just a matter of pressure, feeling like you have to reach beyond your own capacity to create something truly extraordinary, and I can't understand that need to reach from my firmly and happily prosaic part of the writing world. I can imagine, though, that creating art that way once makes it harder to do it by yourself in the future.