1) That's actually not the whole truth, and anal sex does not ruin the sphincter, although other practices can
2) Many gay couples don't practice anal sex, and some straight couples do. So what's the point here?
You're not disagreeing with me, you're disagreeing with the medical community. AND it is still not healthy to force feces BACK into the intestinal system regardless of how the sphincter muscle is affected.
2) Many gay couples don't practice anal sex, and some straight couples do. So what's the point here?
It is not a healthy practice. What is your point?