> The common theme among all of their situations was that they moved into social circles with a lot of drug users. Or maybe they moved into those social circle

> The common theme among all of their situations was that they moved into social circles with a lot of drug users. Or maybe they moved into those social circles because they had a developing drug problem. The reasons why people use drugs is very complex. I used a lot of drugs when I was younger (< 18), and I lost many friends to drugs. Not that my experience translates particularly well to adult drug use, but there were definitely some common themes to why teenagers I knew started using drugs: 1. They were sociopaths. This was a big category of users. They just didn't care and wanted to do whatever felt good. 2. Endured some type of abuse at home. 3. This isn't a reason, but rather a correlation, but many drug users I knew came from divorced households, myself included. There were other reasons, but those were the three broad categories I noticed.