The same laudable qualities of Christianity which made the ascent of Western Civilization possible, have become the very ones that will in time destroy it.
Tolerance means nothing when those of whom you are "tolerant" want to conquer you and replace the value system by which you live.
Kinda reminds me of the great 1950's movie "Forbidden Planet", in which the Krell civilization on a distant planet was destroyed in a single night -- by a machine which they had themselves created...