You ask yourself what you want from life, then you decide how to get that. Too many irons in the fire meant you were missing something you really wanted. You did the right thing. I loved my indie pop band to death, but realized that there was a time I had to leave. I could see the writing on the wall, and work was demanding more of me. My father was also getting worse (cancer) back then, and he needed me a little more. I walked away, sad, but without regrets. Two months later, our singer walked out at a gig. Not the best way to leave a band, but I knew that she would leave eventually.
Now, while I would love to get back into a more high energy rock thing, my health has gone down a lot (mostly physically, with the knee problems, etc.), and I couldn't stand for 3 sets if my life depended on it. The country band is suiting me just fine. I'm having some fun, playing, and I get to sit for at least half the night, if I want.