Never killed anyone?! Are you serious?! Just do a quick google search and you'll see LOTS of results for drivers under the influence who killed people.
Last year we were driven off the road, and had one of our lovely cars wrote off, by someone who was a drug abuser and drove like a prick because of it. Having the nerve between your vertebrae compressed involves a lot of intensive physiotherapy and would you believe that nerve actually controls your arm AND part of your hand? I didn't until I couldn't use it... For months!
Best of all, after the goon done that, and drove us off the road, he then came over (naturally he was fine as is sods law) and proceeded to start being abusive to my Mum, crying in the back of the car, telling her there was nothing wrong with her and to stop 'being a bitch'.
If you have cancer, or some debilitating injury, and want to smoke cannabis I think you should be allowed to. But controlled amounts and in your own home. If cannabis was legal the man who drove us off the road (intentionally I hasten to add - he literally smashed us off the road because we weren't driving above the speed limit - he was done for careless driving under the influence etc) may have taken stronger drugs to feel like the big I am.
Politics does bring out strong opinions doesn't it! I'm glad for this thread, half of my friends are in the 'I don't care so I won't vote' camp. URGH.