I agree, we seem to only accept information that fits in with our beliefs or our concept of ourselves.
If you want to see cognitive dissonance in action, read this blog by a mother who did not believe in vaccines. Her children got whooping cough, and were so sick they were vomiting from coughing, but she just kept giving them more homeopathic medicine, chiropractic visits and herbs, despite no improvement.she believed immunity from having contracted the illness was better than immunity from vaccines, despite any evidence, other than her faith in homeopathy.