According to that logic, we shouldn't be using opiates as medically prescribed pain killers either, because they numb the mind (more so than THC, and much more addictive). I never understood the mindset of people who defend the medical (and even recreational) use of some classes of drugs while getting hysterical over others.
Either way the results is addlepation.
That's aimple answer. It's not about the drugs, it's about who uses them.