From person to person, reactions to mind altering substances differ greatly, and it is irrelevant to encouraging this admittance of stupidity for "Spurious Thinking". We all do stupid things that can positively impact us, it is our job as humans to establish balance in our life. Widely unenforceable laws, blame assignment, and petty attacks from your peers will always be positively harmful to society, and they need to stop.
Find ways to help those with substance abuse problems, be brave, believe in them, help them succeed in their daily/lifelong battle. Further, leave the rest of the world alone; you cant help it, and it doesn't need 'saving'.