It’s 18 in most places.
Also it’s not like the law ever stopped teens from getting hammered.
You’re approaching this from a very US centric perspective. The age of consent is pretty low in most EU countries, it doesn’t mean old creeps fucking 16-19 yo girls is at all acceptable.
Maybe for low alcohol content beer but hard liquor should require a higher age, so should smoking and driving. 18 isn’t the magic number, neither is 21. The idea that there’s a single age we consider someone an adult is outdated.
Practically speaking driving is a necessity to get around in a lot of places. Like work and school
And anyways I think teen drivers are bad primarily due to lack of experience. I started driving in my 20s but I don’t I was better than where everyone else started out at