Because we believe in it. If we believe in it, then we consider it to be true. If it is true, then the rest are false. And if truth is of some value to us, then we value our faith more than others. If we put it on the same level as others, then in reality we don't have faith.
It's strange, Akella, your posts are generally quite reasonable, but you allow such an obvious logical fallacy:(
Why wouldn't God protect us by removing all dangers from the world? Why does he allow evil and violence? This means either he doesn't exist, or he is evil.... blah-blah-blah and so on:
And why wouldn't God love his other sons too!?...
Maybe when they meet, the Evil One (or whoever) will repent, or we will disagree so much that we will quarrel, or something else...
Where are your arguments to the question "Why...?"?...
I apologize if something is wrong.
I've written this ten times already: evil exists so that free will and good can exist. Aliens, from whom God should have protected us, may simply be another necessary test for humanity to continue on the path of good...