Most of the relatively anon bareback anal experiences I've had as a top didn't last longer than a few minutes. The thrill of your cock bareback inside a stranger's asshole and knowing your cum will remain inside of them after you leave is heady stuff.
CRAVE is the right word. We can't help it. And we are glad that tops know that the best way to help us out is to inject a load deep into our guts. No rubbers. No regrets