I've seen pretty much both sides of Heroin use. I have seen junkies that would give anything for their next dose and go completely insane if they don't get it. ..And I've seen people that can use it once in a while and stay in control. To be honest, I do fear Heroin even though I've used it three times. I know what it can do, and I know the addiction potential. What is strange is that I like Oxycontin much better than Heroin, yet it doesn't scare me in the slightest, and it is not as addictive to me. Heroin seems to make many people crave it after one use of it even if the person didn't enjoy it that much.