Two sats/cents: Set and setting Look into the work of Stan Grof There is a lot of depth in this work, but its not for everyone. Agreed, some people due to their composition, it might leave them worse off (usually probably because they don't properly "come back")

It's a bit like guns, there is such a thing like gun safety. Or like going to NYC, there is the best and worst kind of experience you can have, depending on where you navigate yourself to. Just like the internet, you can get rekt with malware and find all kinds of seedy things, yet there is a lot of beauty and value to be experienced as well. It's a zoo out there, best not just to take off without an experienced guide, if you do not have the experience yourself.. (an opinion)