I feel you little brother. Sounds like me talking about some of my white trash neighbors and relatives 50 years ago, except then it was just booze and weed. Some people's whole purpose in this life is to be the bad example. Best thing you can do is take the lesson for what it is, swear never to do the same, and get the fuck away from those people as fast as you can before they get the chance to drag you down with them.