The way kids are today (and their behavior proves them still “kids”, not adults), perhaps we should move (the voting age) BACK to 21. (Let’s recall it WAS higher, please - funny, in days when men behaved like men at the age of 15.)
Maybe you should stop getting your impression of 19-year-olds from the mainstream media.
I know plenty who are responsible, mature adults. I'm sure there are also plenty who aren't, but there's no shortage of irresponsible 40-year-olds, but no lover of freedom would suggest that we start taking away their rights.
We need fewer restrictions on liberty, not more.
Maybe you (and all the other posters) should stop acting as if an age group is the very same as a racial or religious group (funny how we can spout how bad Moslems are, but not college kids).
Everyone has been that age who ever reached 18; it is not a “group” per se to be discriminated against. I’ve been there myself, and I’ve seen it personally when it was “better” than now! And that’s not saying much. (Your quips about 40yo are true, but it is MORE true of 20yo right now as well as generally, and ironically, the 40yo are often vestiges of the beginning of the “immature” movement in society, who only learned hedonism per Dr. Spock.)
And if anything, the MSM loves alcoholic teenagers and tries to make them out to be cool and great.