All the responses I have read here discuss illicit drugs but it would be worth trying to gather some information on prescription psychiatric drugs like SSRIs, SNRIs, and Benzos. I know a lot of people who take these drugs and they are often not even talked about as being drugs. I believe the use of these drugs isn't entirely about having a serious mental disorder and are often an indicator of people being in toxic environments that breaks them down. Doctors hand out prescriptions for these drugs like candy on Halloween.