Certainly not before forties. I'm almost forty, and it's still the same in this age group; myself included (just less frequently than in my 20's because I can't

Certainly not before forties. I'm almost forty, and it's still the same in this age group; myself included (just less frequently than in my 20's because I can't afford luxuries such as no-visible-consequences all-nighters anymore, I guess). ;)