i could write books about this stuff (if i were a decent writer) but i wont. heres a short story.
a "friend" of mine has been smoking weed daily for 6 years. bong. always at home, never goes out. 3 years ago he had people over at his house almost everyday. of course they came to smoke weed. they brought their own, but he provided a chill setting for everyone to indulge. i myself spent most of my weekends there, but i was never a true regular cause i didnt smoke during the week.
this "friend" can be a dick. in three years he has gotten into arguments with everyone in the group and they have left him one by one. lately he is just by himself, smoking weed and wanking to porn all day. he doesnt have a job. his only company is his sister, some homeless guy from back in the day and up until recently myself.
because i moved out of town 3 years ago i havent seen him much. i liked to stop by to visit him occasionally, as an old friend. he was an awesome host, we just talked and laughed for hours, drank beer, smoked weed and had a really good time. the past months i was in town a little more often and visited him about twice a month. at first it was fine, i still felt like his guest. but after just a few visits he fell into his old habits. i was no longer a guest, but just "there". i no longer had the right to converse with him if he thought something else was more important. he spent half an hour fixing his wireless LAN he had NEVER used and never will while i sat there for half an hour doing nothing, occasionally begging him to do it another time. he would snap at me if i dropped some tabbaco on his floor or i kicked over one his 50 empty, old beer bottles by accident. and so on... it all ended in an argument over whether bacterial parasites are always harmful to their host, which i desperately tried to deescalate with no success. once he thinks hes right he will not back down and just keep pounding, losing track of everything else. he once kicked someone out for good because he was sure the person had bent his LAN cable. it wasnt even broken. needless to say, i left early that night.
years of cannabis use and having "friends" use him to take their drugs have left this guy with the inability to maintain a friendship. he has noone left. just his weed and his crazy pot- and tv addcited sister. whenever he gets used to a person he will start treating them like shit, because he used to have that right. people just ignored him and came over to his place the next day anways. see this guy more than once a month and he will treat you like a piece of shit.