What. The. Everloving. Fuck.
...Because if there's anything a vagina loves, it's extremely abrasive friction and foreign particulate.
Let's hear it for developing scads of friable scar tissue in an organ whose every function depends in part upon flexibility.
I don't know about you guys, but personally, I'm looking forward to the hugely increased risk of disease and dysfunction incurred by a chronically impared skin barrier - I need some variety and excitement in my life.
@Phlewf:
"...I propose an venture to create market and sell, ball cleaner, tightener and sander, something to make penisis (peni?) less veiny, a contraption to stop them twitching about (you know what I mean) and all manner of things to scent the end..."
Scrotal wrinkle cream comes to mind.
Some kind of remote-operated tiny tazer for when they're being inconvenient?
Perhaps a bra, with minimiser and push-up options? For the less- and overly- endowed, you know.
Step one though, is to make all men feel deeply ashamed of and disgusted by their bits and how they function.