Rubbish - most people you mix with perhaps, but that's hardly a valid statistical cross-section.
But all the people who hang around you must be pleased to see that you have, yet again, not actually left town this month as you promised. But then they've heard that so many times I guess they just put it down to senility now, much like Clare and her dispatches.
OK, I tip. And it is more than a $20. Can't help it but I do appreciate that some people give great service just because they want to....and I tip big....just because I want to, too.