Are we so shallow?

Today if we look around, we see people fighting to each other for region, religion, caste, creed or faith. We are always trying to prove that we are better than many and sometimes all. We can prove ourselves better in many ways. Sometimes by doing something extraordinary or by performing well or sometimes making our competition look bad. We consider everybody, who is not like us, our competitor.
I came across a forum where people had decided to slander other religion for the sake of proving that their religion was better. This worsened even further and went ahead to become dispute between two countries. Is it really the only way proving that you are good? Cant we just be content that our country is good, our religion is good and concentrate on what our religion is trying to teach us rather than saying bad things and slandering other religions or finding mistakes in the followings and preaching of the other religion?
I think in this world things have become so complicated and we try and co-exist between so many religions that it is difficult to not cross paths with them. This has given us the opportunity to find out that we have so many common faiths with other religions. We were all followers of the same religion in the beginning or mankind. It was all one big family then why do we have to fight like foes now?
Be happy with what you are rather than being satisfied that all others are bad!!!