It's a matter of promoting or not promoting hypocrital values. I do not want my 16 year old daughters having sex or drinking alcohol either, but does that mean as an adult I am expected to model such abstinance? No. Same goes with weed.

I think we would be better off as a culture if we treated out kids as the intelects we wish them to become. Teach them that smoking pot is of great detriment to short term memory, which hampers ability to perform in school reather than lie to them and hide our own vises.

But, hey, what the hell do I know.