The biggest problem, with people, is that they are very good at having/making preconceived perceptions of others, whether it is because the others support a different Football Team, fly with a different Faction, play with certain people etc. We are good even listening to other people's opinion without actually making up our own mind. What one may think makes a person, good/bad, doesn't necessarily mean that others will see it as good/bad. Blindly following other's opinions can leads us in to making bad decisions or having a poor perception of someone else.
The perceived slights/problems are generally a lot worse than the actual slight/problem. We are all, to varying degrees, biased about things. Bias is good at making us disregard things that go against our perceptions, but keeping anything that reinforces our perception.
I applaud those that have written here and have said that they will consciously try to change their ways. Most will sit there and say "why should I change when others won't" and will wait for others to make the first move (as some will think that others think them weak).
Saying that other Communities are worse, is just a poor excuse to not wanting to do anything. Shouldn't we strive to be the best Community, one that others want to come to?
'I would like to be half as clever as some people like to believe they are' Life is full of disappointments, it is how we handle them that helps to define us, as a person