So we all have to pay for those who made a bad choice or a bad decision. Its terrible that so many became addicted but so many had to know this could be a consequence of drug use. If I am a carpenter and I know I might hit my thumb with a hammer and I do and I like it...alot....and continue to smash my thumb on a daily basis because I like it ..alot. Should everyone else have to pay to fix my smashed thumb because I made the choice to smash it every day? 
People need to be held accountable for their decisions or lack of self discipline. 
What deters people from doing the drugs if they know others will pay to "fix" them? It is a choice.