"..The findings from the UCLA survey are consistent with another*recent survey*by PRRI, which found that most Americans who have left their childhood religion did so before reaching adulthood. Seventy-nine percent of young adults age 18 to 29 who have become religiously unaffiliated report having made this decision during their adolescent and teen years..."
And the unaffiliated/atheist/agnostic population are still a World minority.
Boomers tended to hold on to their Xtianity until College or Post College, but those who 'see the light' are able to do so sooner these days, likely due to the interwebs.
(((Their))) biggest fear: INFORMATION.