Personally, how I feel about weed does not mean I should take rights away from someone who enjoys it. I don't like smoking pot, I'm against in my eyes, but I don't think it should be illegal. I mean if you want to do it, then go for it, it doesn't affect my life. Although I would like to say, if they do legalize marijuana in all the states, there should be rules and laws to follow up behind it. Possibly instead of being 18 to buy it, you have to be 21. Or don't smoke and drive. Now I'm not saying that everyone will follow up on this. People still drink and drive, and that's a law. But at least people will know their will be consequences if you do break these laws. 
There will always be an agreement and disagreement on it. Everyone has their own theory. I believe it can change your lifestyle. Whether you agree or not, it's my opinion. And you will have your own opinion as well. It's just a matter of speech. Now I do have my reasons to why I believe it can change your lifestyle, because I have experience, and I seen it happen. No I am not a hypocrite to everything I just typed. Yes I smoked weed before. But that doesn't mean I haven't changed. I haven't smoked in 3 years, and it does feel much better. 
So yeah to wrap this up, it's all an opinion, a fight that will never end. So if they legalize it, they do, if not, then they don't. I hope this helps.