Average isn't useful though. Your expected pay after med school is very different from a music degree. Sure a few in music make millions per year, but most struggle to make anything, and a significant number who do get a good income are not in anything related to music.

There are many different trades, with different income expectations. And of course if you are willing to own the business (not easy) is a factor, some business are more conductive to owning your own business.

We need to be honest with kids: it matters what degree or job you presue. While I can't predict the future perfectly I can look at trends and say some engineering jobs are better than others. Med school looks really good too. Music on the other hand should be a second major or a minor if you study it at all. Likewise in the trades some are better than others, though I'm not sure what to get into.