I see. They may have different lessons for everyone but I have yet to meet someone who learned nothing from them. San Pedro was the same way for me but it is much harder to get a good trip from and it tastes way worse.
I know that "I'm going to do it out of spite" feeling too but I outgrew it a bit as I got older and there were less people telling me what not to do. I still fall into it from time to time. I hate that I can't seem to quit smoking cigarettes but I still kind of like lighting one up in places where I am not supposed to lol.