Good point!
http://loltheists.com/wp-content/uploads/2012/08/money-handled-by-gay-people.jpg
I think some gay men hire them because is their fantasy or just because they want to have someone other gay men can't have for free. When I served in the Navy I had a lot of sex with truly straight guys, it was fun and the only choice but I've always been more into the BFE.
I couldn't agree more with your statemen! So many cases of gay-per-pay men who are ungrateful with us, besides most of times a gay client is blackmail or hurt a straight guy escorting is involved.
https://en.wikipedia.org/wiki/Timothy_J._Boham