Because god exists. 2000 years ago, people didn't even know what the sun was. Jesus and other prophets preached and wrote in the bible that the world would end in fire. 2000 years later, we know that the world will eventually end in fire due to the sun. 2000 years ago, people though earth was then only planet. In the book of genesis in the bible, it was written that god created the [b]EARTHS[/b], even though they had no comprehension of astronomy. 2000 years later, we are finding planets that are similar to earth. Theology is not the act of [b]knowing[/b] there is a god, but rather [b]believing[/b] that there is a god. Thay belief has been confirmed through scientific discovery, some of which I pointed out previously. I believe in god. What if there is no god? No one will smite me for believing in god. But what if you are an atheist? You are entitled to your own belief (or anti belief), but what if you're wrong. More so for those who aren't passive atheists and rather attempt to convert others and slader other religions. For me, the job of science is to prove my religion true, and others false, which it has done. It has debunked Islam, Hinduism, and the Greek and Roman religions. It's yet to provide enough proof to prove christianity false. Even the way we tell years is based on christianity. If proving every thing true or false through science was possible, metaphysics and philosophy would not exist. If an anti-theist is wrong, then they are wrong, simply because they choose to bind themselves to laws of the world they study. A theist cannot be wrong, since they are not attempting to know, or understand. They simply believe. Belief is an opinion, and an opinion is something no scientist or alchemist can prove wrong. That, is a fact.