Yeah, it's all psychology. Life in itself is all about psychology. People feeling inferior or superior to others is about a mindset. It's psychology. People picking fields of study is all about their psychology of what field of study makes them feel better.

I explained that drinking part earlier. Let me buttress it further with a simple scenario from your comment above, using a party event. Would you as a non-smoker and teetotaller rather sit with a bunch of people smoking weed at an event or those sipping alcoholic drinks? Your response to that question is how the society views it. Again, have you seen any criminal caught at a crime scene reek of alcohol or weed/drugs? Most of them often confess they're into drugs rather than alcohol. I guess that's why the society doesn't as much as see drunks as harmful as it sees drug and gambling addicts. The society believes those in the latter category can do anything horrible to get money and fund their addiction.