I'm going to need you to cite some sources. While it is true that inhaling ANY burning substance is usually more toxic than vaporizing it, I dont for a second believe that there's MORE cancer-causing chemicals than in a cig, not for a moment. I'd like to read the published journal article where that's cited to see how they came to that conclusion.
Either way, don't smoke it, vaporize it, and you're fine.
Also, there is no proof that it's chemically addictive (again please cite your source). It's no more addictive than any other dopamine-response activity, so no worse than reading, playing video games, dancing, running, etc.