The idea of cultural christianity is unusual because unlike your quotes sam, it requires no conscious adoption or understanding of the faith in any way. This acculturation is the result of being alive within a particular society and appreciating what matters to them, and, it seems to me appreciating it without reference to personal belief or culture. An extreme example could be the adoption of Christmas and Easter in SE Asian countries where the result is often very unusual to our eyes. It is arguable that many people adopt religious dogma for the comfort it brings, or even a perceived social advancement rather than belief and I am not talking about that. I am still pondering an avowed (even on her death bed), atheist wanting the music and ritual she loved, whilst remaining untouched by anything else the church had to offer. I can understand it. The possibility of being sent off to the sound of Bach's sacred music or a beautiful gregorian chant has great appeal!