that's way convoluted. I can't kill you- by me using drugsIf you use a gun, rather than drugs, to kill yourself, you keep some money out of the hands of the cartels. Thus, if you OD, it is a problem for me.
But if you want to actually get serious here -legalize it all and then the cartels go away too.
Most addicts can find functional levels of work -it actually called functional addiction
http://alcoholrehab.com/drug-addiction/recognize-a-functioning-addict/
Functioning Addict Defined
A functioning addict can be defined as someone who is able to hide the excesses of their alcohol or drug use. An example of this would be the functioning alcoholic who may have a good job, a secure home life, and be respected in the community despite drinking an excessive amount of alcohol most day. To an outsider this individual will be functioning at a high level, but this may be hiding the reality that internally their life is falling apart. This is because addiction always involves a downward spiral even if this decline is well hidden. The functioning addict is sometimes able to maintain their balancing act for many years but eventually things will fall apart – this often happens in dramatic and tragic ways.