Been playing about 12 years, my wife keeps a list of bands I've been in that must be pushing 20 or so now; fired from a band once. It stung a bit, just by the nature of the thing and also because it was the steadiest-gigging outfit I was ever in. Lots of bottom-feeder dive bars, but we had a gig or two nearly every weekend and it was pretty fun.
I actually got into it by referral from Dave, who makes RevSound cabs. The group's long-standing bassist had a career change and wouldn't be able to keep playing, Dave had heard me at a TB GTG and suggested they try me. This was about 2013 or so. The BL came to a gig with another group I was in, decided I was satisfactory and invited me to join, and I played with them for about a year and a half.
I always liked to have multiple plates spinning (that's why my wife's count of my bands is that high), so I kept playing in the other cover band plus took on an original project at one point; I was teaching college night classes and stuff and that plus three band rehearsals meant never seeing my family. So I quit the other projects to focus on this one band. The band got booked for a wedding but the date was my last gig with the other cover band, so they got their previous bassist to come in as a sub for it.
Shortly thereafter, the BL took me aside after a gig and told me that his buddy, the previous bass player, had had another job change that made him available again, and playing with him at that wedding had felt comfortable "like putting on an old shoe," so nothing personal, I hadn't done anything wrong, but I was out and he was in.
They actually asked me to sub for him for a later gig, which I did and enjoyed. But by then it was 2015 or so. Political stuff was happening that I won't get into (TB rules), but suffice to say that it got the BL saying stuff out loud that he had previously mostly kept to himself and it got to the point I couldn't still think of him as a friend I wanted to share a stage with. I don't need people to agree with me, but I do need to feel that they're honest and well-intentioned, and I no longer felt that. They asked me to sub a second time and I declined, and that was it.
Been in and out of groups since then, which lasted for various periods of time but, as bands do, generally fell apart or never went anywhere. But I eventually built a set of relationships with a network of musicians where I'm keeping pretty busy musically, still never gigging quite as often as I was (that was maybe 40ish gigs a year, now I'm doing half that or so), but enough to be content.