There is a massive hole in our logic here in the States and this issue is something best left to individual states instead of the Feds. Yes the fact that alcohol damages your brain is backed by science, but so is the fact that even with the current drinking age there is still underage drinking and it will likely never go away. Prohibition did not work, and it still doesn't with the war on drugs today. The US needs to pull its head out of its ass and lower the age immediately.
I think alcohol is much less dangerous than owning a gun. Yes, there are risks, and there should certainly be penalties for drunk driving, etc. but a country that lets you own a gun and join the military before you can go out for a drink surely needs to get it's priorities straight.
The drinking age should have been lowered to 18 years old a long time ago. There is no need to keep it at 21, because most people drink underage anyway and having the drinking age be 21 is a waste of our time. We could also make more money by allowing 18 year olds to buy alcohol. If they are able to buy cigarettes which are more harmful, why not alcohol?
The United States should lower their drinking age. 18 year old young adults are able to be sent off to war yet they are not allowed to drink a beer. Something about that logic seems off to me. If someone is old enough to give their life for our country, surely they are old enough to sit down and enjoy an alcoholic beverage.
Just because you can go into the army and own a gun does not mean that you are ready for the responsibility that comes with being able to drink. Most choose these options to go into the army or own a gun can be changed easily, you can not however change the lifestyle of being an alcoholic