I've been told that there is no such thing as Cultural Christianity.  That it's so closely intertwined with 'Western' culture that one cannot be a cultural Christian the way that one can be a cultural jew or muslim without strictly holding to the teachings.  If this proves to be the case then there is very little in my heritage that I can cling to and would have to leave my entire Christian upbringing behind simply because I'm walking away from most of the doctrines of Christian Orthodoxy.