Just as I occasionally wonder if I should go to graduate school, I occasionally wonder if I should get an agent. In fact, I use graduate school and agent fantasies as fallbacks--if work dries up, I will go to graduate school and/or get an agent. At least I'll have something to do with my time.
I should have gone to graduate school and found an agent years ago, but no one would have had me then. I'm not sure anyone would have me now, but at least I don't think anyone will actually laugh if I apply.
However, Agent Provocateur suggests that my agent fantasy, at least, truly is a fantasy.