I'm not a professional, but, I do know a few people who do comedy routines and MC at clubs. They pretty much perform for a target audience, and, rarely do anything considered mainstream. But, they do make money doing what they do.
I think it is very cool to see that some of these guys have made quite a name for themselves. I actually got on stage and sang in front of about 200 people a couple months ago, and I was nervous as hell.
I think I would be more at ease doing comedy, then singing.
But, I sometimes wonder if I would be better as a writer, than actually getting on stage and making a total ass of myself.
But, you never know how people will react.