I think that since a lot of stoners are criticized about their weed smoking, when someone doesn't wanna smoke it's like get the fuck outta here lol. I mean c'mon, if you turned down a native american's peace pipe back in the day they would've fuckin scalped you or something. You're offering someone to smoke some of your bud and chill with you, and it's like you turn that all down. I don't really care if someone smokes or not, but that's how i kinda see it.