Well it's an issue with kids in my wife's family and they're smoking it at school too. I also have personal experience of the possible long-term effects on some who develop schizophrenia. I have been employed to support 2 in the UK. Young men in their early twenties unable to work and on powerful anti-psychotic medication for life. Their lives ruined by their old hippy generation parents allowing them to smoke it from their their early teens. And don't tell me it doesn't affect your brain. That's why you smoke it! When I was young we used to call it getting 'f u c k e d up' and for good reason because that's what it does to you. I stopped smoking it myself when I realized it was affecting my practical common sense thinking which we all need to get through life, especially our working life. If I was a rockstar or working in the creative arts I might think differently.