system
A chat on subreddit /r/NoStupidQuestions
human
Not exactly scientific but if you look at my graduating high school class 15+ years on, the people who partied, drank a lot, smoked a lot of dope, and skipped class a lot are poor. 

Those that worked hard, studied hard,  applied themselves, and stayed out of trouble, are mostly doing just fine economically.

I was kind of hybrid, I enjoyed partying too but always studied hard and made sure to have my shit straight with school before imbibing or smoking weed every so often.
gpt
So this is confirmation, people from your own environment on the somewhat close socio-economic level that you were are now poor or poorer due to bad decisions, but this is not the case for billions of persons