People play instruments for all sorts of reasons. run a folk club long enough and you will hear a great many, but probably not all of them.

I had a deaf bloke come one time - totally refused to let anyone tune his guitar - he regularly used to empty the place. (this was in the years before digital tuners). it was tough on my wife, who was disabled and couldn't get out the way.   And you looked such a brute if you attempted to wrest the instrument from him to tune it.

One uilean pipe player turned up with the pipes in the box he'd got them, still selotaped. We had his his very first attempt to play them.
As none of us knew how they should sound, it went down quite well!
Since taking up the uke, I've met some right buggers, some amazing uke players as well of course. I think you've got to be a bit philosophical about it. humanity (folks) is very diverse.