When clergy get together to talk about people whose commitment to faith is about as deep as an oil slick, they don't just talk about "Easter Christians" and Jews who just show up, year after year, for the High Holidays. They also talk about people who take this whole concept to another level and, basically, turn faith into a force that shows up for events linked to births, marriages and funerals, and that's that.
Thus, I would argue that if you were looking for a topic that would offer a window into life in a post-faith world, the whole concept of a faith-free funeral is what you want. Let me stress, however, that "faith-free funerals" are not the same thing as "green funerals," unless, it would appear, environmentally friendly funeral rites are discussed in The Washington Post. More on that in a moment.
While most recent news coverage of minimalistic or abandoned faith has focused on the young, especially the so-called "Nones," it's also important to remember that the Baby Boomers have also had an adventurous streak that affects religion and the lack thereof. As I wrote in an earlier post about some -- repeat SOME -- Woodstock Generation funerals: