Why must we build a society that brings faiths closer together?

The only logical answer is because more than 3 billion people have religious faith and like most religions you must put your faith before anything else in your life. We have seen good and bad things come out of religion. To try and get rid of faith all together is just ridiculous so makes more sense to at least people become more tolerable of each other so we don't have to hear in news how some one or group does terrible things. In all honesty though I can only see 4 reasons people come together, war, terrible natural diaster affecting everyone, maybe alien invasion some sort lol :), or dictatorship forcing everyone to be as one.