No, not a mere belief, for there is evidence.
Here's a new shot fired by Stephen Hawkings:
Hawkings was recently interviewed where he made the following statements:
Hawking told Diane Sawyer that "science will win" in a battle with religion "because it works."
"What could define God [is a conception of divinity] as the embodiment of the laws of nature. However, this is not what most people would think of that God," Hawking told Sawyer. "They made a human-like being with whom one can have a personal relationship. When you look at the vast size of the universe and how insignificant an accidental human life is in it, that seems most impossible."
Hawking's latest book, "The Grand Design," challenged Isaac Newton's theory that the solar system could not have been created without God. "Because there is a law such as gravity, the Universe can and will create itself from nothing. Spontaneous creation is the reason there is something rather than nothing, why the Universe exists, why we exist. It is not necessary to invoke God to ... set the Universe going," he writes.
http://news.yahoo.com/s/yblog_theloo...-a-fairy-story
He explained that there is no God and humans should therefore seek to live the most valuable lives they can while on Earth.
Also:
A study using census data from nine countries shows that religion there is set for extinction, say researchers. The countries are Australia, Austria, Canada, the Czech Republic, Finland, Ireland, the Netherlands, New Zealand and Switzerland.
http://www.bbc.co.uk/news/science-environment-12811197