I've only skimmed this thread, but the bleedin' obvious answer is "not where there are people who refer to them as 'youngsters'". Sorry if somebody said that already. They tend to be where other people of similar age are, not in rooms full of people of their grandparents' age.

Take Sidmouth: they'll be up at the Bulverton or where Shooting Roots sessions are, not in the Ham Marquee or Bedford or singarounds. Or Towersey - in the Dance House or Hive, not in the concert tent. There are many hundreds of people under 25 or 30 at those festivals, but if you're asking that question, you won't see them where you go.

There are lots and lots and lots . . .

When you were 20, who did you hang out with? And weren't you interested in stripping something more from the opposite sex than a willow?