1. Just as bitten fingernails are considered unattractive, neat, kempt fingernails are attractive to most. Nowadays, with manicures and nail art, nice fingernails can even boost your reproductive advantage!
2. Fingernails are useful for peeling price stickers off stuff. This is especially useful when you're buying someone a gift.
3. Fingernails are useful for untying knots. And ribbons. And things like that.
4. Fingernails are useful for opening up cans of soda. Some of those tab things are a pain!
5. Fingernails are useful for scratching itches. Although granted, sometimes we scratch too hard.
6. Fingernails are useful for self-defense. You can scratch people with them. And if you die, the forensic biologists might be able to get DNA traces from under your fingernails!
7. Fingernails are useful to pick up really fine things. They're like tweezers.
8. Fingernails are useful for making those awful blackboard scratchy noises. No better way to get a class's attention.
9. Fingernails are useful for poking mosquito bites. For some reason, that makes them itch less.
10. If you ever get stuck in a desert island, at least you'll have some extra protein to keep you alive.
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