Most humans act on impulses and indulge in irrational behavior. As an outsider it is easy to judge others based on their behavior. We don't know what actually is happening in their mind. They may think what they are doing is rational based on their preconceptions and reality they form in their minds. They filter out the evidence which disprove their beliefs. I think that I'm quite rational. But I have many irrational tendencies and have done very stupid things. So who am I to judge others. Rational part of brain 'cortex' doesn't have full control too. Reptile brain overtakes it and mistakes happen. I don't think this issue is going to get solved. It's very messy and intricate.