This is easy to assess. Of course not, it nominally trains people who will fit in, be normal and keep things going, and not change significantly once they are adults . It also trains them to believe that they cannot or need not change significantly once they are adults. The highest age I have heard to start at is 88. There is the possibility you will find some new and valuable avenues of expression, too.
Someone has to do it.
Learning to expresss yourself through a musical instrument is a large project indeed, and the reward of this effort is immense. It is the payoff in joy, self expression, esteem and a feeling of confidence of being able to do what you set out to that makes it worthwhile. Furthermore, if you are willing to adopt a childlike attitude, be naive, and keep seeking and integrating the ways into who you are in which you learn most quickly, the process will be speeded greatly and it will be a lot more fun. You will wind up being a different person, one who can play the banjo. If as you read through these little essays you decide you've been victimized, you have missed the point.