The musky scents of human bodies are one of top sensual delights in life. Anything beyond basic hygiene would kill that, so washing before sex, unless after digging trenches (this is just an example - I do not dig trenches), would be a bad idea.

I find it horrible that young women these days are made to believe that they need something for their genitals beyond a daily wash with a liquid that has the right pH (think of towelettes and what not that is being sold to women). I find it equally horrible that young men are made to believe that they need to shave or wax off their hair (yuck) - off the chest, off the genitalia, etc. It is precisely the hair that makes that intoxicating musky scent stay on the skin. Without the hair and the scent, how are the male genitalia different from dildos? I mean - I do not use vibrators etc. (not yet), but, I gather, there are dildos with buttons that make them move. So to me male genitalia without hair would look like those moving dildos.

The most absurd side to it is that pheromones are on sale - pheromones that are supposedly aiding in sexual attraction. Sure, first have people get rid of their own scent which is free, and then sell them ersatz for money - an excellent business plan.