Americans are migrating away from religion at an unprecedented rate; Christianity in particular. But not because atheism is more appealing. People are leaving because religion has lost its appeal. Once upon a time Americans believed religion offered solutions. Today, religion is viewed by many as the problem.
Everyone has religious doubts. Our circumstances can make God seem distant or vengeful. Science can make God seem unnecessary. Those doubts can cause us to abandon faith. But maybe our perspectives are wrong. Maybe the gods we abandon never existed to begin with.