VFE's point about the similarities between people's perceptions of music and flying is right on the money! Those who don't do it don't appreciate the amount of work required to succeed, and the amount of relatively boring drudgery and bull!!!!! you go through to maintain the career once it's established.
You'll hear the 'it's not what it used to be' line from practitioners of almost any career in the Western world - commercialism (or rather, cost-cutting) and legislation have severly curtailed much of the creativity and fun to be had in most careers. Maximum, Pilot Pete, WWW, Easy Glider and Redsnail are all professional pilots now working in the industry. As you can read, their perspectives vary, but every one of them would have you look at the realities of life as a pilot - without forgetting the still-remaining, if fewer-than-before, rewards!
There are many ways of earning a living. Because you usually have to work for someone else, most of them suck to a greater or lesser extent - and aviation is no exception. As an airline pilot you are a highly trained and regulated resource to be exploited by your employer to his commercial advantage. Hopefully, your end of the deal gets you reasonable money, some time off with the family, and the prospect of better things to come. Unfortunately, it doesn't always work like that, and in all cases, commercial pressures will attempt to squeeze more out of you - maybe, eventually, more than you are willing to give.
There are still plenty of us who thoroughly enjoy our flying, and get well enough treated by our employers - and are prepared to work to improve things further. Few of us are blind to the fact that we might well have been financially better off in another field, but most of us that have been around for a while know that there are always trade-offs. I accept the bull!!!!! of the huge commercial organisation I work for in exchange for reasonable money, good company while I'm away, and a fair amount of time at home. Do I get the best deal out there? I doubt it, but I know that I'm doing OK - and I still love what I do.
So, is it worth continuing? Well, that's up to you. Just ditch the rose-tinted specs, and remember that all careers have their downsides.
Now, where's my guitar?