People of warm fertile lands made up benevolent but expansionist gods. People from frozen wastes like this made up gods of terror, bloodshed, and dying in the cold.
Many Americans are devoted readers of Scripture: More than a third (37%) say they read the Bible or other Holy Scriptures at least once a week, not counting worship services. But Americans as a whole are much less inclined to read other books about religion. Nearly half of Americans who are affiliated with a religion (48%) say they “seldom” or “never” read books (other than Scripture) or visit websites about their own religion, and 70% say they seldom or never read books or visit websites about other religions.
—Pew 2010 U.S. Religious Knowledge Survey