Why do some people fail to do Ayahuasca

Why do some people fail to do Ayahuasca? Most people leave the Ayahuasca sessions due to the overwhelming sensations, like fear of the unknown, however, the ones who leave the Ayahuasca on the first try, is because they can’t handle the initial stage which is purging, and let the medicine in your system, this stage can be really new for most people and even devastating for others. Opening to Ayahuasca, allowing the medicine in the body is a bit difficult for some people, this can lead them to think that this is not for them, and maybe they are not right. This is why it is best to get to the ayahuasca sessions with a true detox and openness.