Lots of gay guys like you prefer seeing this after they nut during sex. Although with a kink like seeing another guy accept a load of cum in his mouth is actually one of the more popular fetishes out there. Well, that is the case unless you're forcing your kinks on guys who don't have the same fetishes as you.
Yeah, you like it dirty, don't you? There's nothing to be ashamed of if you have weird and nasty kinks of your own.