It looks like you're new here. If you want to get involved, click one of these buttons!
One of the reasons why several people resort to frequent drug use is to self-medicate due to current emotional and/or mental health issues. This also happens with legal prescription drugs too such as Diazepam for example, as well as other recreational uses of substances such as alcohol and tobacco.
Criminalizing people for their current drug use leads to the social stigma which then leads to more emotional distress and other possible mental health complications for the individual user which then leads to the more drug use (I.E self-medicating) via the individual user.
When the fear of social stigma reduces Drug Users may very well become more open about their issues and seek help for them.
However, people of society do need to assume responsibility when they are openly preaching that all drug users are criminals that need locking; this attitude just creates more problems for the users and those around them.