Wow..... What a misinformed individual. I am so sorry about your lack of cognitive ability, but do not fear! You can always leave your ignorant thoughts in the past and move on to be a more positive contributing human being at anytime you would like. You're concerned about weed smoke so much for people? How about all the shit people/children inhale from sitting in traffic? And almost any study performed by a non biased counterpart will show you many things are worse for you than marijuana such as alcohol and caffeine (both legal). And let's not forget the other things an ignorant person such as yourself most likely ingests every day like sugar and large amounts of a poison (I swear in any laboratory it's labeled a poison) called sodium chloride a.k.a. tablesalt. Long story short nothing is healthy enough to make you live forever so enjoy what you do and don't waste your own and other people's time by telling them that something is bad for them..... You don't need me telling you water is dangerous to you if you try and drink 9 gallons of it.... It's a given