I do have to say in the very beginning that the alcohol culture in Finland is very prominent and so close to the one in the UK even though it might be hard for you to believe, oh and our regular prices are stupid, e.g. here an average crappy lager "pint" (only 500ml) is 4£.
I think it's wrong to give alcohol to people that young. Although I agree that it's better than let them drink in the streets/parties at that age.
Of course if it would happen that they got very sick and didn't want to drink until they turn 18, as Ben wrote about, then that would be a pretty good thing I guess, but if they just suffer much one day, and say continue to drink soon after and start gradually binging when they're just 14 and continue doing so, that's a great shame in my opinion.
It's a tricky issue, if you'd be just be completely naive and didn't know what happens in the world around you, I would say that I think it's ok if people start drinking at around 16 years, I know it might sound too late for some people, but I just hate it when I see so many drunk 13-14 year olds around, sure they might have 'fun' etc, when drunk, but people have been having fun at that age without any extra hurtful 'aid'. Also with that young peoples' drinking "progress" (as wrong as it sounds to use that word in this context) it feels that soon younger teens won't have any childhood at all, when they've already done all adult things when they're just 14 or so. Obviously that doesn't have to be bad, but I've read studies where they've indicated significantly more stress, depression, ill-being among those people.
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Personally I started drinking very late compared to other people, I was 17. From being that old till around 20 I had always been very moderate about drinking, never puked etc. When I started uni, my drinking habits gradually increased a lot (very surprising). Although the very most of the time I've always been aware of my actions, there are 4 nights with memory lapses, some of which are pretty scary, like the one where I woke up 23 miles outside the city in a very rural area, you can't easily access, with 4 bruises, 2 bloody cuts, open black eye, which scar is still visible after almost 3 months..
I don't condemn drinking at all, I just think it would be better if some attitudes could change and so many people wouldn't need to overdo it (yeah I know that sounds ironic) on such a frequent basis. Also sorry, but the US drinking age is ridiculous, sure many people drink before that, but the fact that it's illegal to say have a small can of watery beer before you're 21 is stupid.
Also one thing which might be obvious, is that you can be feeling great even though you drink very loads and think that it doesn't affect you really, but then one day you might get diagnosed with cancer, I know that doesn't happen to SO many people, but sadly I just know too many people that died too young that way.