Sometimes when I have felt like things are just not good enough for me (or really suck - often the same, though) and the thought of "why bother staying sober?" popped into my mind, the answer I used was:
"What the hell. I'll stay sober even though it's stupid. I've done stupid things before" ...and I chose to not act out and instead connect up with buddies or whatever it is that I was supposed to be accomplishing. Soon, I either forgot about the problem, came to see that it wasn't a real problem in the first place, or that the itch came from a deep desire I had to run like hell away from real life.
In sobriety, I found that real life actually gets better miraculously, when I stop running away from it and work on it with trust that He'll work something good out of it eventually.