I do have a sense of why some people use drugs because I have lived inside of a heroin epidemic. There's no reason to have such a condescending tone. Anyway, they should be punished to prevent them from using dangerous drugs.

You shouldn't mix me up with prohibitionists and Christians. I only want to prevent unnecessary suffering. Heroin and other very hard drugs only cause suffering and death. I have seen this first hand. That's how I know. People seem to hate me personally for having these opinions and I can't imagine why because I only have the welfare of other people in mind.

edit: I have looked through some of your comments. At one point you posed the question: what is the difference between letting someone eat cheeseburgers and use drugs? You practically make my point for me. Regulating the contents of food is extremely effective in reducing health problems. It has been done with success in many places. Saying that hard drugs (not weed and the like) should just be legal is like saying we should let food companies put anything they want into their foods and by extension let people eat whatever they want. Obviously, everything is much better when we regulate our foods.