Should I end a 14 year old friendship with my best friends?
It depends if you think you can handle ending a friendship that long.
Of course I'll be able to.
While I know it can be difficult, it's reasonable to end your friendship if you don't think it's good for you anymore. Sometimes people just grow apart. I think you should try to be kind about ending the friendship, though, because you don't want your friends to feel too upset.
I just think he's a heavy pot smoker and should have been kicked out of college. No one likes him so he wouldn't care if I ended our friendship.
Then I guess you shouldn't have any issues with ending the friendship. You are right to end the friendship because he sounds like a deadweight and isn't going places in life, so he will likely drag you down someday. I support you and it seems you are making a rational decision.