I love gigging. It's by far my favourite part of being a Bassist. I love it because, although I'm generally a humble and modest man, performing gives me a chance to show off. I also get to hang out with my bandmates (who are fortunately, very cool) and provides me with a small but significant revenue stream. Significant because it makes my hobby seem "legitimate". Without gigging, i'd still play, but I'd think twice about spending £50 on flatwound strings...
I love the experience of playing live and i don't let the occasional crappy gig put me off, but for some people, the whole thought of playing in front of a potentially hostile audience makes them actually unwell -one of those people is the legendary Andy Partridge from XTC. His stagefright became so chronic that he walked off stage at the start of a live, French TV broadcast, never to return to the gig scene.
Most of us on this forum play for fun. If that fun is in front of people or alone in the bedroom (hyuck, hyuck...), then as long as it's fun - no harm, no foul. Some of the best musos I know wouldn't even think of gigging and put considerable effort into home recording projects. A LOT of effort. Often for the fruit of their labours to be heard by just a handful of people. But they love it. It wouldn't work for me, but for them it's a creative outlet that's second to none.
As the French say - "Vive la difference!"