Well, shokenman, you have jumped into a subject that will make people want to postpone lunch.
I guess you have never cared for someone seriously ill, elderly or dying. Or been seriously ill etc. yourself. At that point, the anus is just another opening in the body where things go in and
Saying there are body openings that only go one way is like saying people should never vomit, because things only go into the mouth and should never come out....
When you get sick enough, you will be happy to have someone stick something up your butt if it will relieve your suffering. Or are you so protective of your precious rectal area that you would refuse morphine suppositories for pain when your blood vessels have collapsed from dehydration and you are too weak to take pills by mouth?
Asteja, can I borrow your Clue by Four? Somebody needs a spanking.