"""Bob Marley died of lung cancer and he was a frequent marijuana user. But I'm sure this last fact is not new to anyone.""
That's certainly new to me... I hate it when people lie and then say that it's a fact.
Bob Marley died of malignant melanoma which spread throughout his body.
What kills marijuana users are the stupidity of others in their treatment of marijuana users. The usage of marijuana has never killed anyone, in fact, more people have overdosed on water than marijuana.
It's the police kidnapping and torture of marijuana users (prison). It's the drug dealers making money by killing you and stealing your money because they're dealing with an illegal substance. It's all the glass particles that might be blown into marijuana to make it heavier so they can sell less for more. It's smoking marijuana through home-made aluminum pipes (Alzheimer anyone?) because you don't want to buy paraphernalia that can land you more time in prison (kidnapping and torture). It's the felonies on your record that keep you from ever being able to make a good living through a good job so you therefore might be inclined to have a more lucrative (dangerous) style of living.
Keep spouting your stupid facts (lies), just like everyone else who wants to keep a harmless drug illegal, therefore making it harmful.