The problems caused by prohibition far outweigh any problems brought about by an individuals addiction; were the drugs freely available and sold at their true value the crime statistics would see a truly dramatic fall. Were tobacco outlawed, as it really should be, people would commit murder's to obtain it. The real evil is that others have taken it upon themselves to deem what others should do with their lives.
Go away, mind your own business and get on with your own life, and remember when you see your loved ones life, or your own destroyed by drugs, that it is because of prohibition that they are addicted in the first place and were the drugs legal, they could pop down to the chemist and feed their addiction; just like smoker's do every day of their life.
Don't you find it odd that the 'legal' substances we are permitted to imbibe cause hundreds of thousands more deaths, annually, than all of the drugs deemed illicit?
If you cannot understand and see this for yourself, then there is something seriously wrong in your judgement skills and because of this any opinion you might hold is invalid.