I guess I'm super libertarian, but I don't even smoke pot, and I'm still all for legalizing it...and crack.
Are they "bad"? YUP. But as I see it, if you know cracks bad and still want to smoke it, that's your prerogative.
In my book, everything should be legal up until it ****s with someone else's well being and/or property. You do LSD and freak the hell out and drive your car into a building? Nice job jackass, you're responsible. You do LSD and don't mess anything/anyone up? Have a nice trip. The thing with laws is sure, it'd be nice to make bad things disappear and just be nonexistent, but that's not what they do. They create consequences for things...simply having something in your possession or in your system shouldn't matter- at least not in my personal opinion.
I can write a chris-length post on this but I'll stop here...