Ive been smoking it for about 4 years. I wouldnt say its addictive as ive had intervals of not smoking from weeks to months. But I do go back to it when i feel like it because in my opinion there are benefits from it. It can benefit you and it can also not. For example if you just smoke to have more fun playing Call of Duty or listening to brainwashy songs or eat a ton load of food then it would be a disadvantage for you, spiritually. But if you smoke with a right state of mind, for example to sit in a park and appreciate the creations of nature, or God if you have that belief (I do), then I would say it helps encounter new feelings or atleast increases its intensity. Ofcourse once youre sober you lose that state but the memory can help you to have a newer understanding about your life and the way the world is naturally and artificially. As for negative effects to your mental or physical health i would say there are none, thats just my opinion from my experience. However with that said, smoking too freuquently and constantly will kill the effect, changing it from an inspiration to a demotivation, and it will desensitize you to the point where you'd be smoking more than needed to have the same effect. Also smoke in general is bad for you but the negative effect from that is signifcantly minor, especially if you're not smoking much. I put my trust in weed because it is a drug from nature, similarly i believe certain mushrooms can give beneficial spiritual experiences, depending on your state, althought i havent tried any. As for the manmade drugs (if they were made from 'man') i dismiss them all together.
Know your enemy, dont believe lies