Any ultimate claim about reality begins with a faith commitment. Some skeptics are willing to admit this point (not many, mind you). Take Crispin Sartwell for example, who explains in his Atlantic article how he has taken an "atheist leap of faith." He concedes that religious folk and non-religious folk all have a faith commitment to how they understand the world (which means all folk are religious, by the way!).
Whether we admit it or not, we all build our view of the world on an assumption, a big picture about what's really real, that we cannot prove. That's okay. It's unavoidable. The main question is which starting point, which assumption, what presupposition, is the right one? Which one is true?
The Christian begins with a belief that God exists and that he has revealed himself. That is no more or less religious than Carl Sagan's famous quote, "The cosmos is all that is, or ever was, or ever will be." The question for thinking people is which one is true: either a world that began in chance, is governed by nothing, and is heading nowhere, or one that filled with purpose and meaning because there is a Creator, an intelligence, behind it all.