College Presidents Encourage Lower Drinking Age

A group of 100 college presidents have joined forces to encourage the government to change the legal U.S. drinking age from 21 to 18. With the overwhelming number of teens and underage college students dieing and being injured by underage drinking, they say it will help take some of the thrill out of it.
They argue that men and women are allowed to join the military and die fighting for our country at age 18, but are not legally allowed to drink. The college presidents group also cites the younger drinking age in other countries, where drunk driving incidents are also fewer.

There will no doubt be forceful arguments on both sides of this debate. What are your thoughts? Should the drinking age be lowered, or kept the same, and why?