Marijuana has over 400 different chemicals in it and certain types of tree bark is natural and is very poisonous. Marijuana comes out of your body so slowly you won't feel a physical addiction. Tar in cigarettes/tobacco is what causes cancer. If you do real research, not just from high times you will understand that there is way more tar in your beloved marijuana. Do you know that? Since you proclaim to be the marijuana expert you should know that.
I think u need to look into to long term use just saying coming from a cop. Tree barks i dont know nothing about just so i make that clear. Look at why tobacoo tax's keep going up and marijuana is legal in over 70 counties and starting to be legal here in the US one state at a time. Hip is legal to grow in KY commical use for oils and to make rope with.