Isn't it strange that K2, synthetic marijuana, is legal in the majority of states yet organic marijuana is not?

K2 is deadly while natural marijuana has been proven to be beneficial medically. I find this quite strange and something people should really be talking about more. K2 is killing people but can be bought at a gas station meanwhile people are going to jail for smoking natural marijuana that does nothing to them other than help them in some way. What a big game.