Cum is in short supply for cocksuckers. So doing something to show your appreciation for him is appropriate.
I had 18 YO college student ask for my generosity to visit me in NYC. While he would no doubt have sucked me, I would have definitely had him cum in my mouth. He probably bottomed too.There is another on Reddit that I contacted that is looking for older men. No talk yet on generosity, but I suspect it will be there soon.
I have no problem with compensating with the right person. I just don't want to get caught at it by the cops or my wife.