I'm a man. I am therefore a brutish, uncultured animal.
Translation: my sex is too lazy to raise the toilet seat in a unisex public restroom and prefers to take target practice at the available aperture. Most of us are bad shots and the seats generally end up with a nasty coat of unpleasantness.
I imagine that, for a woman, using a public restroom is an ordeal. It takes work for a woman to avoid skin-to-seat contact. Yet her bladder will sometimes insist that it must be NOW, and off she goes to the public potty.
Now, here's my question, based on hours and hours of observing the human species at Starbucks.
Why don't women raise the seat when they're done? After all, they're the ones who would benefit from it. A man, being fundamentally lazy and selfish, won't lower a raised seat. He'll just have a bigger target to shoot for. (Amazingly, some still contrive to still miss. After they figure out the Grand Unified Theory, researchers could productively spend their remaining years understanding why.)
Despite their obvious self-interest in raising the seat, women appear to very rarely do so. It's not like they're at home, where they can badger the men of the household into acting civilized. And those tissue-paper seat covers don't offer any protection from evil microbes.
Our women are in the wild. They need to take charge.
So why don't they?