Bipolar disorder and marijuana don’t mix.
Again, some people respond differently to drugs. The "It never caused *ME* any problems!" crowd is simply unaware that one size does not fit all.
It seriously screws up some people.
Thus, you believe that if a small percentage are affected negatively by a drug, then it should be removed from society. Congratulations, you just removed every modern drug in existence. Ever listen to ANY pharmaceutical commercial? More than half of the spoken words are warnings about bad side effects that some people might have. Dolt.