We all believe in something. Even saying that we believe in nothing is itself a belief. In much the same way, people who say that they detest philosophy, seem always to be full of opinions of one sort or another, from politics and religion, to the virtues of instant re-play, oblivious to the fact that their opinions on these various issues are nothing but expressions of their own philosophy. Tracing the origin of all things is a formidable task to be sure, but a compelling one. But physics has its limits in the same way that our senses do.
All physics ultimately fades into meta-physics.
And in that world of metaphysics, we discover that faith is indeed the most utilitarian form of transportation. But just because it is a belief doesn't mean it can't contain a degree of rational respectability. Because of the limits imposed on us by our powers of sense, the act of believing is, for all practical purposes, unavoidable. We all believe in something. Even saying that we believe in nothing is itself a belief.