Without using inappropriate terminology, how many headline bands today do you think "keep it clean"? I know it's not the old days of the 60's and 70's when every tour bus had it's own pharmacy, but how much better do you think it is? And, do you think it's better for the music this way?
I think people dabble just as much in drugs, but they aren't necessarily as open about it as they were in the '60s and '70s. In any case, some are clean and some are not, and I'm sure there are good bands in both groups.