its not me who cares about its long term effects, its people like my sister or parents. i myself dont do it that much, but i know i eventually will. though, i did think that weed doesnt cause any permanant damage but i dont know which set of research to beleive!
most people always say oh give this link to ur parents it say says how weed is harmless.... well that shit is useless when they have 100s of links to sites that say weed causes terrible long term damage......