If you were eating properly, you'd find no need to wipe after defecating. You know those shits you go to wipe and nothing ends up on the paper? Imagine those 7 days a week.
When you wipe excessively, and irritate the "fonde" of the anus, it excretes an acid, similar to crushed appleseeds, it's just not desirable to lovers. If you leave it alone and don't wipe and pass solid stools that don't smear, the pipe actually becomes sweet in taste.
