I'd agree that usually when you seriously consider leaving a group, raising the issue with the group doesn't necessarily resolve it. Still, it might be worth trying, and if you've invested a lot of time and energy in this band, and you didn't try to communicate with the other members, you might regret that part of your decision.

Or if "the situation sucks", truly, then it's probably time to move on. You'll be better prepared to join or form a new group.

Charley Noble