Actually the belief in nothing and that when you die everything is black and gone is believed by a minority.
Do the research yourself.
Here's one from wikipedia:
Irreligiosity (atheism, agnosticism) is highest in Canada and the US (Canada: 16% USA: 15%), and accounts for roughly 10% of North American population.
http://en.wikipedia.org/wiki/Religion_in_North_America
and if you think wikipedia is biased then honestly, anything written by a human being is.
Actually, a belief that there is no deity is also a belief. Nobody has ever proved that there isn't. Nor will anyone ever be able to.