You forget that theists do believe in science. Theists will say that science points one direction and atheists will say it points in the opposite direction.
The theist's faith is based on faith, but it is also proven by valid science.
The reason that theists say it takes more faith to be an atheist than a Christian is as follows:
1. Science points toward the theist view of the world more than it points toward a Godless world,
2. The Bible says that people are without excuse, they already know that God is real. (though I would disagree with these verses meaning that it's easier to be Christian because it's actually difficult to be a Christian.
Also, what is the beef with the cosmological argument? Why are all the atheists making fun of it but never answering it straight? It's one of many good theist arguments based of science and logic.
