If two men really love eachother (or just enjoy hooking up), sure there are other ways of getting eacchother off. Anal sex though, there are many ways to look at it.
Top guys view: It's a hell of a lot better than complaining during oral (ow, watch the teeth)
Bottom guys view: Some guys tend to get off/harder with something up his ass, not sh*t though.
Metaphorical view: A passionte expression taking physical form, where two try and merge as one.
So many perspectives on it, but true, how there are some health concerns if you're not careful. Some say the deeper the anal sex, it can alter your stomach a bit, and innexperienced anal enthusiests who manage to take dp or a cock too big/thick, can end up with a hemmerhoid to pay for it in the end.
Like any other thing in sex, it all a matter of preference, what you enjoy then and there, even better if you and your partner both love the same thing you do big time.