I think people don't gig because they get tired of all the junk that goes along with gigging. It's not the playing on stage or any of that... it's the long drives, not being around your family, being stiffed for money (that's if the gig is even a paying gig), lugging all the heavy gear. Then sometimes if your really unlucky you do all that and end up playing to like 5 people who may or may not even be sober enough to realize there's music.
For some if your an original music type player (or anti-cover band depending on your viewpoint) there might not even be much of a market out there or gigs available to play.
Like Bochafish said, for some it ends up being that a steady paycheck and stuff ends up being more important.
AMEN, +1,000,000,000

