I have to ask this

WTF is wrong with glasses? I've noticed a lot of conversations on Ask.MeFi lately on contacts and eye surgeries, and I'm starting to have the impression that everyone is wearing contacts these days. Glasses can be misplaced, sure, but so can contacts--and otherwise, glasses are a better way to make a personal style statement, and a lot healthier for the eyes than the contacts. Why are people so vain, and why are eyeglasses a subject of vanity in the first place?