Don't have a dog in this hunt but to say it has no effect on other peoples life is just incorrect. Studies have shown that States that legalized pot sales have seen an increase in automobile accidents and deaths with more drivers testing positive for marijuana. Want to smoke fine. just don't proceed to get behind the wheel of automobile.
There's some conflicting studies on that. Insurance industry says, compared to similar non-legal states, three legal states had increases in accidents. Another study found no increase in fatal accidents. And past studies into states that legalized medical marijuana found DECREASED traffic fatalities. The fact that state-by-state crash data has such large variability (Colorado increased 21% relative to Utah but 3% relative to Wyoming) means that the net 3% increase of legal states relative to non-legal states is a very iffy conclusion, especially considering the conflicting studies.