Taking a break from something you've done your entire adult life, and that you're good at, is both terrifying and liberating. I gave up gigging about ten years ago. For me there were three reasons: 1) I became a musician/composer/arranger as an outlet for creativity, but the gigs I had evolved into were not creative, but simply aural wallpaper for cocktails or socializing, and therefore frustrating and unrewarding. 2) I needed to sleep better and be more healthy--late nights were not conducive to feeling well or being able to work hard the next day (or be sociable with wife, kids, friends, etc). 3) My repair practice was thriving, yet I often found myself competing with my own clients for gigs, and that just felt wrong. I really enjoyed getting a few of my repair clients hooked-up for gigs when I quit.
The obvious question is: "Do I miss it?". The answer is; you bet your ass I miss the good stuff. The crappy gigs, the late nights, the smoke-breathing, the self-important ********; I don't miss them one bit.
Good luck, Phil. Metamorphosis is a wonderful thing.