A new survey suggests traditional churches have a lot to worry about.

USA Today reported that while three-fourths of young adults consider themselves to be "spiritual," most do not pray, go to church or read the Bible:

"If the trends continue, 'the Millennial generation will see churches closing as quickly as GM dealerships,' says Thom Rainer, president of LifeWay Christian Resources. In the group's survey of 1,200 18- to 29-year-olds, 72% say they're "really more spiritual than religious.

"Among the 65% who call themselves Christian, 'many are either mushy Christians or Christians in name only,' Rainer says. 'Most are just indifferent. The more precisely you try to measure their Christianity, the fewer you find committed to the faith."

The story goes on to provide additional key findings from the survey.