Confirmation Bias
A confirmation bias is cognitive bias that favors information that confirms your previously existing beliefs or biases.1
No one is completely immune to it. My favorite is the Autobahn myth. I've lived and worked years in Europe. The Autobahn is not completely unregulated. But when I dispute that widely held belief, all sorts of 'experts' arrive on scene to pontificate about it, they having never lived and worked in Europe. Hmm..... Refer to above statement.