Fundraising.
I love that people are inspired by something and want to raise cash, but in a lot of cases, the amount of money raised is simply that which would have been taken by the bands.
That’s ok if the band gets the plaudits but it’s usually the organiser on local radio or with their picture in the paper.
I don’t do free gigs but I do give some of my spare time to charity (always have), so my conscience is clear.