Do I mean the illegal ones? No. At least not necessarily. First look at list of all narcotics that are non addictive. DMT, ganja, XTC, acid. All those are NOT addictive and safe. So there is no dangerous. Then pick ones that's legal. In US, that means Ganja, kratom, salvia, I don't know what else. Now try once. Just once. Wait for a year. They said that this is very dangerous stuff. They said, like Yahweh must have told Adam, the day you eat it you die. The thing is, many religious bigots also said that porn is dangerous. Is it? Really? How do you know? You can read arguments after arguments of pro and con. But here is an advice from a businessman. The more authoriteys told you not to, the more you should do it. Don't get caught of course. There is always a big correlation between what helps you see reality and what's prohibited. Again. Try the legal ones only. At least at first. See for your self. What is all these "danger" all those DEA said? Then read info on the net and compare yourself.