Historically, the split in Western society (which is what we're really talking about here, right?) between so-called "spirituality" and "religion" was made during the Protestant Reformation. The Catholic church heirarchy was blatantly corrupt, so the Protestants set up their own thing, saying they were spiritual while accusing the Catholics of being "just" religious.
Anyway, several hundred years down the line, we have the European Enlightenment, where values such as secular humanism replace overt faith, including the diverse Protestantisms.
But it turns out secular humanism is no different. Spirituality gets replaced with "Reason," "Humanism" etc. But if you get right down to the structure of the belief -- whether you are a modern day Western secular humanist (aka an atheist) or a old-school Catholic -- your belief in overarching values, and your belief that society (everyone) should base their lives on these particular sets of values are essentially hegemonic in their nature.
A modern example of this is so-called "Americanism" -- meaning hardwork, individualism, freedom, Mom, Apple Pie and, unfortunately, also incinerating non-white-skinned people in their own countries with WMDs (in the name of this myth, of course).
P.S.
>>2 is right.