What would that do, dog? Do you think that most people between 18 and 21 are going to magically start thinking like you and "get their **** together"? Naw, man. It makes no difference as a whole.
Individually yes, a whole? No.
So, with that being said, what happens between 18 and 21. Oh yeah, people are old enough to go to war, but not to vote.
Is that what you want to happen? That everyone to have a chance to die first so that people in those age groups won't be represented? Because a lot of people who aren't rich have to serve in the military to get anywhere.
Good way of maintaining a status quo.
Sinister, if you think about it. If that's what you're getting at you should be ashamed of yourself.
I said *if*.