This year, Christmas may be colder - or at least quieter - for the thousands who attend several evangelical megachurches across the country. Some of America's largest churches are closing their doors on Christmas day, which this year falls on Sunday, to accommodate to the lifestyles of their congregants. Among those slated to close its doors on Christmas day is Willow Creek Community Church - Chicago's largest congregation and one of the top five largest in the nation. "It's more than being family friendly. It's being lifestyle-friendly for people who are just very, very busy," said Cally Parkinson, spokesperson for...