15. You’re the baby out of your friends, and they’ll be 21 long before you.
14. Your significant other is older than you, meaning they can have a drink with dinner and you can’t.
13. It’s a long two years until you’re able to be allowed to actually do new legal things again.
12. You’re planning a vacation with friends, but none of you can rent a car to drive around.
11. You’re legal in another country, but not your own.