Why is marijuana illegal when?

Well I don't know about 0 ever, although it is healthier that Alcohol, and Cigarettes, but anyway. One would ask themselves this..."It's not bad for you...You don't get violent off of it....And it's easy to grow!!!!" Ah that's it the reason Marijuana will never be legalized is because everyone and their Grandma would be growing it in their backyard and the Government would be unable to tax it.