Why do I maintain mister.red & cresby.com ?
Well, it is a hobby that fits my: other hobby, vocational years, creative streak & wish to be helpful. And as I back it up by asking organisers of clubs and sessions for information when at events - I have a "tribe" of friendly acquaintances, and we can all benefit from that.
Then there is the sartorial affectation - wot I calls corporate identity. It generates more friendly talk, I meet interesting people.
Over and above the expense of the hobby of being a Folkie, it is a small outlay financially (thankfully) and a lot timewise, which I am rich in.

Win, Win. And there's more:

Stroud Ceilidhs
Cheltenham Folk Club
Dursley Acoustic Music Night (DAMN)
Stroud Voices Folklore ish.

I am sure this would apply in other genres, but I rate the Folk world as more accepting, and friendly than most worlds. Why wouldn't I want to give as well as take?