The people on the internet are most likely right, because they are the ones who have tried and experienced them. Do you think a police officer has EVER tried LSD? Obviously not, they wouldn't have been able to become a cop with today's laws. The police don't know sh!t. Your parents probably have experienced a few of them, but the only reason they tell you to not do them is because they don't want you to lose interest in school/work and whatnot and they don't want you to try the more dangerous drugs out there. Certain drugs, as you probably know, are more dangerous than others. The dangerous ones are like meth, heroin, coke, crack, speed, PCP, ketamine, inhalants (extremely bad and you can die quickly from repeated use), even tobacco, etc. The others are perfectly (or near perfectly) fine. These would include marijuana, peyote, mushrooms, LSD, LSA (found in morning glory seeds), etc. To overdose on marijuana, you would have to smoke 40,000 joints in 15 minutes. There have been ABSOLUTELY NO deaths attributed to overdose simply because it is impossible. Mescaline in peyote is harmless and many South American cultures have used it for thousands of years on a regular basis. The only thing you have to worry about with shrooms is the chance of getting mushrooms that aren't actually psychedelic, but poisonous. Other than that, they are fine. I would have to even say that LSD is one of the safest drugs in history. It has been scientifically proven to be less toxic than aspririn or even vitamin C. But you have to remember, LSD is a potent and extremely powerful chemical. Just one pound has the potential of getting over 22.5 million people high. It can change your personality, but nearly all of users say that it changed them for the better for the rest of their entire lives. Just take caution when trying any drug, try to abstain from the harmful ones, but trying one of the safer ones a couple times will have absolutely no negative physical effects.