Whenever there is a social ill, the cry goes out to penalise either the entire population, or at least a large demographic.
Lowering the speed limit and raising the drinking age are two mantras which socially-conscious, self-appointed armchair watchdogs target in their blogs, both of which are perfectly moral ideas in a perfect and puritan society but will not have much effect on the death rate, caused by speeding or alcohol-related crashes.
I was never a fan of lowering the drinking age, because I could easily see its nuisance value in terms of youngsters being unable to handle their booze on a night out.
We read every so often about teenage girls drinking to the point of vulnerability in downtown Wellington, and we hear when that goes wrong in the worst possible way.
But drink-driving appears to be across all ages.