What's your opinion on the possibility of lowering the drinking age?

I am 18 and I disagre with it. I feel that as a legal adult, that it wouldn't affect me anyway since this law probably wound't be ped until I was at least 21 anyway. I also feel that its one of the last things to look forward to as you get older (turing 21). Also, I feel that you would see more pregnancy rates o up and more trouble being cased by young drinkers. What do you think?