Religion gives us something to believe in. It teaches us the difference between right and wrong. Most of my morals are based on my religious beliefs. It is these morals that drive us to help one another. You could say religion gives people a conscience.
Religion drives people to do what they think is right.
There is no perfect religion. Even though we may not agrees with people with other beliefs, there is a lot that can be learned from them. We need to put aside our differences and help out our fellow man. If we can achieve this, religion will not be a cause of conflict, it will be the answer to it. Imagine there's no countries.