(This is from my upcoming book.)

In 2005, reputable researchers Christian Smith and Melina Lundquist identified the predominate worldview among American teenagers as Moralistic Therapeutic Deism (MTD).¹ They determined the creed of this worldview from interviews with 5,000 teenagers as consisting of five tenets:
1 A God exists who created and orders the world and watches over human life on earth.
2 God wants people to be good, nice, and fair to each other, as taught in the Bible and by most world religions.
3 The central goal of life is to be happy and to feel good about oneself.
4 God does not need to be particularly involved in one’s life except when God is needed to resolve a problem.
5 Good people go to heaven when they die.

They found this worldview particularly evident among mainline Protestant and Catholic youth, conservative Protestants and even non-religious teenagers. Follow-up research to the 2005 findings was conducted in 2011 with even worse statistics. The 2011 research revealed,

An astonishing 61 percent of the emerging adults had no moral problem at all with materialism and consumerism. An added 30 percent expressed some qualms but figured it was not worth worrying about. In this view, say Smith and his team, “all that society is, apparently, is a collection of autonomous individuals out to enjoy life . . . MTD is the de facto religion not simply of American teenagers but also of American adults. To a remarkable degree, teenagers have adopted the religious attitudes of their parents. We have been an MTD nation for some time now.²

Dreher concludes that teenagers simply adopted the religious attitudes of their parents and MTD is now the de-facto religion of most American adults. This is the cultural worldview confronting the American church in the 21st century.

¹Smith, Christian; Lundquist, Melina, Soul Searching: The Religious and Spiritual Lives of American Teenagers, (New York: Oxford University Press), 2005, 162, Kindle
²Dreher, The Benedict Option, 11