re prescription drugs: That's where the personal responsibility comes in. If YOU are responsible for your own decisions, whether you do what the doctor recommends or not, then who would you sue?
re alcohol and marijuana: Yes, but we've also seen the effects on society from criminalizing alcohol. We are seeing those same effects with the war on drugs: gangland-type violence and executions, the introduction of potentially dangerous substances to "cut" the product with no regulation, and other negative effects.
Then on the positive side of legalizing alcohol, we have tax revenue, the ingredients are known and documented, the effects are well-known throughout society. I wouldn't be able to tell you what ANY side effects of heroin, meth, ecstasy, or any currently illegal drug are. I know how much alcohol a person can consume, there are tests to see just how high your alcohol level is, and I know the physical side effects of consuming alcohol.
There's no question of what other substances may be in that whiskey bottle, but we've had a rash of heroin overdoses in the southeast Michigan/northwest Ohio area, because nobody knows what's in the heroin being sold on the streets. Legalize them, regulate them, tax the f**k out of them.
Can you imagine if the current street value of illegal drugs had the same percentage of taxation that alcohol and tobacco has? Did some Googling to try to answer that...
According to http://www.drugpolicy.org/drug-war-statistics, "Tax revenue that drug legalization would yield annually, if currently-illegal drugs were taxed at rates comparable to those on alcohol and tobacco: $46.7 billion" I think it would be more, that they're underestimating it because their agenda is to keep them illegal.
Also, there's the money we WOULDN'T be spending on police involvement, trials/court proceedings, incarcerations, etc. The website http://www.drugsense.org/cms/wodclock says it's $40+ billion annually ($15 billion spent by the federal government, $25+billion spent by state and local governments).
For the record, I don't smoke, I don't drink, and I don't use any illegal drugs. I don't use any prescription narcotics, either.