I have a theory that some people's likes are based on things that are too subtle, intangible, or unrepeatable to identify, predict, or data mine. At least that'

I have a theory that some people's likes are based on things that are too subtle, intangible, or unrepeatable to identify, predict, or data mine. At least that's what I've figured is why recommendation systems don't work for me and why I run into so many dead ends when I try to use clear aspects of what I like to find other likes.