[smt88]

First, the number of marijuana users is likely not far away from the number of tobacco smokers in the US.

It still wouldn't be close. It's much more expensive to treat a single case of cancer (or lose a person's life) than it does to treat a single case of... whatever marijuana causes.

Just the fact that marijuana isn't known to dramatically increase fatalities in its tens of millions of users should tell us what we need to know.