Yeah, he's about my age...24. Hopefully he'll snap out of his lifestyle at some point. And if not...well, we aren't really friends right now. I don't know what it is, but as soon as someone seems like a lost cause I kinda give up. I tried being friends with him and the group we used to hang out with (that I'm pretty sure he still hangs out with). But they were all pot smokers and never wanted to do anything besides smoke and play video games. I tried for a long time to get them to do stuff...and for a long time their response was "mmm, nah, we just smoked, we're gonna play xbox..." I'd even try to get them to do stuff they might do anyway. When I'd go to their apartment it was boringsville with them playing video games while high.

They didn't try at all to make me want to be around, so in return I stopped trying. If you don't want me around, I'm certainly not going to force myself upon you.
After that I finally made friends with an awesomely awesome ESTP and my INFP friend also moved back to where I lived at the time.
And...uh...that has nothing to do with the OP. Oh well
Trying to get people to do stuff, then moving on when...well you know. Is
a key indication for myself that I finally correctly identified. My sister would
say of me, "When sLiPpY's done with someone or something...it's over...he's
done."
I'd been at the same space as you describe of your friend, eons ago...back
in 1992 at University of South Florida. Same scenario.
That's all those people wanted to do, and slowly I got back to my instincts.
I started doing physical activity on my own, like going running late at night,
or hitting up the complex gym. Finally, just got tired of it all...knew I had to
do something good for myself and got out. Couldn't/wouldn't go back.
Years later I met my ISTP best friend. We didn't initially recognize how carbon copy, and both cycled through many friendships/groups of people,
each time when it was over it was over. The stronger desire for variety,
physical activity, etc. automatically won out over following the herd.
Over the years, we'd had some big fights...can't remember what they were
about. But always picked up, again...went out and did our activities, lifting,
golf, soccer, chess, billiards, gaming, playing guitar, listening to music,
going to see bands, motorcross, basketball, tag football, water skiing,
boating, fixing things, moving things, sporting events, hiking, water rafting having wives and girlfriends along when they were willing.
Wasn't until this moment I understood, the reason we kept returning to
a state of good friendship. Who else on the planet could we individually
find who'd want to do all that?
What's really funny about it, is you can't tell an ISTP nothing....they have
to figure it out for themselves. Gosh knows I had friends who tried, I
couldn't see it in those moments, and I didn't realize it in the moments
I experienced an overwhelming feeling I needed a change!
Wasn't until later I saw it...