It's pretty common that I'll be playing a gig and someone will approach me and say how hearing me play makes them wish they had time to practice. But, you know, work and all that.
Funny thing is, I'm a guitarist, and I don't have time to practice -- I'm way too busy just trying to find a gig.* (And when I do find one, well, let's just say the actual playing I wind up doing typically ain't exactly pushing me to my limits.)
If you want to have the leisure time and other resources required to work seriously on playing your instrument, my advice is: Take up investment banking. You'll probably have more time to practice than most actual professional musicians. Plus, you'll be able to afford better gear. And most importantly, you won't ever have to play commodity music.
*Okay -- and blogging as work avoidance. (You see right through me.)