Why is cooking on another sim's lot inappropriate? Is this a bug or was it designed that way on purpose? It seems pretty harsh to yell at Grandma when she comes over and bakes cookies for your kids.
I wasn't happy they tweaked it to make it inappropriate .. but people complained it wasn't appropriate and there you go. I am glad though that we have a trait as Cinebar mentioned "always welcome" that allows it... I kind of wish the game had started out like that though. I don't like when they take away stuff we get use too.