There are plenty of comparisons that might be made, but driving seems an apt comparison. Driving is extremely dangerous, magnifies even small mistakes, and kills or maims very large numbers of people on a regular basis. And yet even with similar evidence of harm and habit formation people do not treat driving with the same fear but instead face driving with irrational positivity and optimism.
Scientists using rigorous observations and mathematical analysis do not see drug use and driving as having risk profiles that are completely different.