Just reading another thread on this subject and it occured to me why this is so often a difficullt and intense experience.
I would argue that in most working class families, music is discovered by people through informal routes at the mid to late teen stage and mostly through popular music genres. The most common first instruments are probably electric guitars and basses, amybe keyboards and, less commonly, drums (because of cost, space and noise issues). As a result of this, many people who come to the double bass do so late in their careers and after they have ALREADY started playing gigs. As soon as they take the plunge and buy a double bass, the people around them are immediately putting pressure on them to play the instrument on gigs.
I was playing for a couple of years before I did my first electric gig and during those years was unemployed, single, living at home with my parents and shedding for hours and hours. When I got a double bass (thanks, Jake), I was a lot older, in full-time employment and had the full range of obligations that come with early middle age. As a result, I was gigging well before I was even close to ready. No stamina, no technique, lousy intonation etc etc. When I think about it, we don't really stand a chance, do we?