My four criteria for professional work, applied over many years, have been these: 

Can I learn from this? 

Is this serving a useful social aim (however we might understand that)? 

Can I earn a living doing this? 

Is this fun? …

Is this serving a useful social aim?

For my generation, there was no doubt that music (and specifically rock music) could “change the
world” for the better; and listening to music, was itself, a significant contribution. There was a spirit of the time, a zeitgeist, and a passion. So the answer, historically, is yes. 

    But the spirit has moved. Music remains available, but subtleties are involved – are we available to music? – and these subtleties are vulnerable to gross action. Conventional rock performance is now increasingly a business operation & audients claim consumer rights. Where the communion between music, performer & audience? 

    Overall, my current answer is I don’t know.