I've always thought that the problem with the drug war is that governments simply try to regulate the usage instead of regulating the desire. People use drugs because their lives suck. People drink because their day sucked. People use drugs to change their state of reality because they do not enjoy the state they are in. I think the funny part of it all, in some shape or fashion, government is the reason why people do not enjoy the state they are in. Taxes, rules, and regulations are created for every aspect of your life. The government controls every part of life and when you are high, there is no control. You get to be free for as long as the high lasts.
To the decriminalization, if I can grow it in my back yard, the government should have no right to say what I can do with it. If I have to create it in a lab setting and plan on selling it to someone else, then there should be some control. I've never heard of weed killing anyone, but I've heard of all the rest killing people. So when it's possible to kill someone, there should be roads to justice available.
2¢