Sorry Brian, I'm afraid that went right over your head.
Anyway, I'm certainly not good enough to warrant a booking, or possibly even a floorspot at your club.
The thing is, you don't have to be a very good musician or singer to know when someone else isn't very good. If I'm going to pay money, I want to see people at least make an effort to be half-decent, and I don't want to pay to support some sort of care-in-the-community hobby convention. I can go to singarounds and sessions for that, and even join in!