by 1) Potential suitors will have a harder time figuring out your sex.
2) Tan will be uneven around temples.
3) Anti-kook snipers get better aim at your head through rifle scope.
4) Another color that won't match your outfit.
5) Hair will fall from excessive rubbing, and allergic dandruff
will develop.
6) Kissing in the water will involve klunking helmets. Any other
form of PDAs is already out.
7) If worn backwards by mistake, vision will be seriously impeded.
NO FLAMES please, I am just kidding! --Luigi