Why are y'all arguing? Why are you typing paragraphs to a sentence saying "I don't thnk it should've been?" Or someone saying they're happy it is? Like, get over it.

let them have their opinion. You don't have to argue them to the ground.
That being said, I don't smoke marijuana, I dont really like it and personally I don't really think it should be legalised and that it should be available for only patients who actually need it, but good for those in Colorado. I don't actually having a problem with other people doing it. If you do it more power to you

it's just not for me.
SOME people who do smoke pot act so arrogant about it and throw it in your face when it legalised. Even though I hate it, I still dont care if it's legalised or not. The only thing that will change is that people will do it openly. No one will just randomly start smoking it because it's now legal.
If people are against it, leave them alone.
If people are for it, leave them alone.
No need to try and tell them that they're wrong and think you're right. It's pointless. No opinions will change. Why do you even care?