What do you think about legalizing drugs?

I think some drugs should be legalized. Not any super addictive/dangerous ones like heroin or meth. But other illegal drugs that can be used safely and responsibly should be. Of course there would be people that would misuse/abuse the legalized drugs, but that already happens! OTC and prescription drugs can have negative effects on your body just like some of the safer currently illegal drugs can have. So what's the big deal?