I am 17, have been able to do that since I was 16...
I have ways of getting it. Just can't go buy it myself. Annoying.
Guess it is, I think it's kind of stupid they made the law that way in your country. If people are not allowed to buy alcohol they will get it and get completely wasted. There are always those few who will get drunk if alcohol is legal, but most people I know don't feel the need to drink a lot.
Actually where I live you can buy alcohol at 18. Just another couple of months... Not that I'm excited that I can buy alcohol so much as I can GO INTO A BAR. I'll be all grown up. tear
Where I'm from you can legally purchase and drink alcohol at 19. Buying it for the first time was quite anticlimactic.