Funny, as a pot smoker myself, who would love to see the terrible jobs program known as our drug war ended, I actually think its MORE important to legalize the harder drugs, even though they have a lot less users.
Fact is, drug laws have not been found even marginally effective at their intended purpose. Addiction rates do NOT go down as a result of them. In fact, about the only things drug laws have accomplished are filling prisons and creating law enforcement jobs. They also did a pretty good job making sure any violent street gangs that formed had easy access to lots of money, making them more lucrative and more able to expand and war with eachother.
There is ample evidence that drug addiction is not the cause of criminality either. However, criminality is the entirely predictable result of raising the price of people's addictions beyond their ability to pay and causing them to make irrational decisions like choosing between drugs and food or criminal acts and starvation.
Do you blame the drug addict who knows a little chemistry and knows he can feed his own addiction and maybe make some money cooking meth? Or do you blame the policy makers who created the black market for meth in the first place? No (or exceedingly few, there is always one of anything) homes burned before drug laws came to town. Now? Now half the people in burn units are there as a result of meth cooking..... and.,... the laws haven't even reduced drug use!
Whats worst, if you go back, its pretty clear all this hubub started as a jobs program after alcohol prohibition. It was the very people like Harry Anslinger who were facing possible loss of funding and their jobs with it, if new drug laws were not created..... they lied to congress like it was their job. Seriously, google good old Harry, you will see.
On the other hand, we have the swiss heroin study that looked at EXACTLY these issues. What did they do? Very simply....they provided heroin to junkies at what they believed would be an open market rate without prohibition and a safe place to use their drug. The result? well, they continued to use heroin, but there was a reported 90% drop in all other forms of criminality.
Drugs are not the problem, idiots who think they can solve all problems by just making laws against anything they dislike who are the problem.