I mean no disrespect when I tell you this but here it goes: You need to do some research and devote some of your personal time to educating yourself on this topic while keeping an open mind and your opinion will change entirely. Cannabis is an extremely aggressive and effective cure for skin cancer as well as other forms of cancer. Do some googling for the query "Cannabis cures cancer" and read some. Just because it isn't being used does not make it false. There is no money in a cure. Money is in cancer treatment. If there was a cure for cancer tomorrow in the form of a natural plant that anyone can grow at home, it would collapse the entire medical industry in a year or less, just like if marijuana was completely legalized tomorrow it would cause our judicial system to collapse in a year or less.
That last part about the medical and judicial system financially collapsing is just my personal opinion and nothing more. The bit about curing cancer is fact, look it up.