Why can't people be comfortable in their differences?

My opinion is that in order for people to put aside their dfferences, they must also pocket their pride. It is pride more than anything else that leads to differing opinions and the inability to accept other views. We all like to be right, and think of other people in terms of being inferior intelects. When we do acknowledge a superior intelect, we again react differently, depending on our self image, and our standing in our groups. We can all be a bit more tolerant if we feel secure in all walks of life, conversely, insecurity plys havoc with our acceptance of others. Upbringing is another important factor which is mostly over-looked. By the time a person has reached puberty, the damage has already been done, either by bigoted parents or peers. It takes a strong individual to overcome the one-sided biased attitudes of youth, and leave them behind in adulthood. Alas, but too few ever manage to shake the yolk of ignorance and fear.