Reasons weed should not be legalized?

Well medical marijuana isn't bad, it helps cancer patients, but street marijuana  should not be legalized because now and days people lace it with other drug substances and it kills quicker, Some mistake it for spice and spice can cause death. Weed isn't something you can trust anymore. Like people say marijuana is a gate way drug, First it's weed, then that just doesn't help anymore, so people go to the uppers Acid, Shrooms, Meth, Heroine and other drugs. I've experimented and trust me it's not a chance you want to take. It's like life or death. 

Ithink the answer is "false". i believe the term 'behavioral health' may add to the stigma and discrimination.