1. Anyone who has been following the conversation or who hits the ">>" button a few times will see that you've moved the goalposts.
2. You are falling pretty to an emotional reaction, which is clouding your response to marginal risks. The only real risks we know about with marijuana is:
- Temporary short term memory loss and difficulty concentrating, depending on dose, tolerance, amount consumed, for 2-3 hours.
- Possible reduction in IQ for people who (1) are underage, (2) smoke heavily, (3) do so chronically
---- caveat being that no attempt was made in those studies to distinguish between juveniles who did their schoolwork then got high and those who got high and did not do their school work. The relevance is ongoing debate regarding the effect of education, particularly language and mathematics, on IQ, given how IQ is tested.
- A very slight increased risk of emphyzema, provided you smoke like Willie Nelson: Minimum of 5 'standard' (as if) joints per day, every day, for 10-30+ years.
- Potential decreased risk of certain cancers in certain populations.
- Potential fast food or junk food consumption following use.
In other words, merely living in a city is far more dangerous, even when one alone looks at the effect of concentrated pollution on cancer rates (ignoring additional dangers related to crime, accident, etc).
But those are details and facts. Better to stick with a gut emotional response "drugs are bad mmmmkay (unless it's ethanol or nicotine-containing tobacco)", right? Less thought required, plus you get a nice self-righteous buzz articulating that basis of opposition.