Drinking age in the US: should it be lowered?

Friday • "In the end, we will protect only what we love, we will love only what we understand, and we will understand only what we are taught."
I'm on a roll today. How about the drinking age in the US? My husband and I had a discussion about this today- he noted that the minimum age of enlistment for the military, the voting age, and the age in most states for purchasing of cigarettes is 18, and purchasing alcohol is 21. Should the drinking age also be 18?

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