Having given several anal orgasms (to women, despite the fact that medical science denies it's possible) I can definitely state that anal sex is good. To prove that point, I need only point to the nearest gay male. If anal sex was so terrible, he'd be awfully lonely, doncha think?
But, it's not something you can rush into. You have to prepare in advance, cleaning out the ol' chute. Then the penetration has to be done slow and easy. Probably the main reason that so many women don't like it in the keester is that the guy didn't take any more time warming up her rump than he usually does lubing her snatch. Fortunately, most guys like that don't last more than a minute, so who'd notice anyways.
And for what it's worth, the time and intimacy involved for a good prep are worth more than a weekend at a marital retreat. You'll never get more intimate with someone than when you're getting them off as you pour a gallon of water up their tush. (And I'm told the orgasm with a full gut is beyond anything God ever intended.)