Lowered!? Oh by Gods will no! If anything at all then raised! That would save millions of lives through the prevention of alcohol addiction and abuse and alcohol related deaths. But the government and many people around the world that don't fully understand that and want to drink don't want that to happen. That would mean the government would lose out on billions in tax revenue and you wouldn't legally be allowed to drink until you was 21!
I'm in the UK and underage drinking IS a problem here. Not just underage drinking but those that are the bare legal age of 18, many a percentage of them go on to have drinking problems later on not to mention health problems because of it. I believe if the drinking age was raised to 21 in the UK like it has been and is in the US, then yeah, the gov might lose out in tax revenue, but it would save a lot of people. The amount of people it affects negatively and how much the gov don't lose out from them is not enough for them to consider their lives more valuable than what they'd make if that happened.
Sorry to gush lol.. That's just what I think about it but I've lost friends and family to drinking abuse and as much as I like a drink lol.. I don't abuse it as that's not wise but if you lower the age well, I think that's just asking for trouble. Our generation is a bit twisted as it is cor lol..