If you continue to labor under the misapprehension that a significant shift is underway when it comes to age demographics and religion, it's time to wake up. Continuing to lay the decline of emerging generations in commitment to Christianity at the feet of "slacker" theory—in which young people are adjudged merely lazy—is itself an exercise in laziness. Young people are leaving the church on purpose. We would do better to ask why they're leaving than offering excuses that fail to give them a reason to stay.
Here's an excerpt from the Pew Forum Report:
The growth in the number of religiously unaffiliated Americans – sometimes called the rise of the “nones” – is largely driven by generational replacement, the gradual supplanting of older generations by newer ones.4 A third of adults under 30 have no religious affiliation (32%), compared with just one-in-ten who are 65 and older (9%). And young adults today are much more likely to be unaffiliated than previous generations were at a similar stage in their lives.
These generational differences are consistent with other signs of a gradual softening of religious commitment among some (though by no means all) Americans in recent decades. Pew Research Center surveys conducted over the last 10 years, for example, find modest growth in the number of people who say they seldom or never attend religious services, as well as a declining number who say they never doubt the existence of God.