Debate it more often than I should (playing in my band).
Just not totally into it, the material isn't quite up to the level that I enjoy listening to (even though I wrote a few of the songs), some of the members aren't up to the level that I'd "prefer" to be in a band with. I'm not some perfect prodigy guitarist by any means, but I enjoy the few song ideas that I (rarely) come up with and I feel like once the rest of the band has had their turn with it, the song has turned in a negative way from what it was.
My previous 3 bands all failed miserably, we think we finally have a solid lineup with this new(er) band and a year down the road we start losing members, gaining members, teaching them all the material, losing LOTS of time with lineup changes, start booking gigs and drive 2 hours to sometimes play for almost nobody and don't get paid because we didn't bring 10+ heads out, therefor losing money to play shows.....Not to mention some KILLER local acts around here just all-around out-playing us.
What keeps me hanging on? The fact that I'm pushing 32 years old and I swore to myself that this would be the last band that I tried to go anywhere in. It is also a lot of fun to be jamming with some of my best friends. But the thought remains in the back of my head of "Probably never even going to be able to pay my bills doing anything I really enjoy". Which sucks.