I agree with your point that LSD is better (even though i have never done it, i have only done shrooms, but i have talked with plenty of people who have done LSD)
However, actual Psilocybin mushrooms do not poison you. You're probably confusing them with Amanita muscaria, which is a mushroom that does make you hallucinate but also does poison you. These are not real shrooms though
Real mushrooms, and most hallucinogens are actually pretty harmless.