I partied hard from 18 to about 25, then from 25 to about 29 I'd get loaded once a week/2 weeks. Didn't go out to bars much, it was usually at someone's house. Shit is too expensive and I don't like crowds and bar vibes. I also smoked a fuck ton of weed and ate a lot of mushrooms during this time as well. My favourite kinds of nights often included about a gram of mushrooms, tequila or gin and lots of bong hits.
When I turned 30 the hangovers started getting absolutely brutal, so I kinda stopped and kept it for special occasions. Right now, I haven't been drunk since late August, a friend's birthday party. I'll still have a few beers here and there, but crazy drunken nights are pretty much over and I'm cool with it. I barely drank during quarantine because I didn't like the idea of drinking alone at home.
Not gonna lie, the whole ride was a lot of fun and it never really interfered with my work or anything, but after a while I was happy it was winding down. Friends started having kids, got more important jobs etc... it kinda happened on its own and it wasn't a priority anymore.
I still smoke weed, just a lot less. I still enjoy a good mushroom trip once or twice a year but tripping frequently is over.