One of the things about considering a lifetime in music is, you have to be flexible. That's a whole lifetime you are talking about, in a society that in almost any other industry, a lifetime means radical change. How many businesses are unchanged over a 40-50 year span?

Expecting to be able to do what you enjoyed in your youth, or mid years as you get older, and music changes, tastes change, social life changes is simply unrealistic. The way to survive it all is to not get tied to styles, or forms of presentation. The bottom line is, if making music nowadays doesn't excite you any more, how much of your love of the job is tied to doing what you did as a younger man (or woman!), and how much is tied to making MUSIC? Music changes. It has always changed, always will, and anyone that goes in expecting things to stay the same simply hasn't really learned the lessons of history.