For the purposes of this post "Straight Edge" means no alcohol, tobacco or recreational drugs. Some definitions take it farther than that, but I just mean the basic one.
But yeah, I'm in my late 20s and have never really seriously partaken myself due to lack of interest. The only times I can recall are accidentally taking a drink of someone's Bloody Mary when I was a kid (Which I still remember was spicy as fuck decades later btw), and getting some 2nd-hand pot smoke at a friend's house once.
If you do, I don't judge, just try to be careful/not overindulge is all I'd say.
I drink on weekends. Not all weekends, usually when I'm hanging out with friends. I've never done any other form of drug.