Guys, guys.. Please stop arguing.
Obviously he crossed the line with the disabled joke without realising it can be offensive.
I am also young (much younger if the average punter is really 45-55 as mentioned). And I keep being told I am a not-bad-looking guy by my male friends, female friends I don't want to be involved with romantically, and the women I pay to have sex with. But still, in the recent years I couldn't pull even if my life depended on it.
And every WG I've had so far commented on my age. Some in a nice way, some in a really surprised way as the OP said. It really is a mood killer. As some of you more experienced gentlemen said, we both pay the same money looking for the same service, so it shouldn't matter to them. If you like me being young, suck it better, if you don't, well too bad, I'm paying you for this so get on with it...
I don't get the point of a WG questioning why I pay for sex instead of trying to pull. Obviously I wouldn't pay you if I could do it with little effort...