It is a religion that is used to replace lack of faith in traditional religion.
Just for a simple example: what observation would disprove it? Nothing. There is no conceivable observation that could disprove psychology. Therefore it is not falsifiable and therefor pseudo science. QED.
It is mainly for confused people that are searching for answers, or people looking for a way to hurt others. That is,- psychologists are mentally unstable sadists.
Psychology is for people that want the aura of real science to hurt others.
It is attractive for stupid people that are not smart enough to do real science.