I think it's nice that you all respect your parents.
My mom actually encouraged me to smoke cigs in front of her, she knew I did it anyway and she smokes ~30 cigs a day. She doesn't mind hookah at all and has sampled a couple times but never sat down to smoke with me.
My dad is just not interested in the least and has no desire to even try it. He's like that with alcohol too usually, if he wants a drink he'll have it but that's fairly rare. (Which I'm fine with he gets super goofy when he's had a drink, lol low tolerance ftw.) Anyway his apathy about that kinda stuff is well respected by me really, I might try to get him to try hookah if he gets stressed out by something but not letting peer pressure effect him is a good trait.