Why does Christmas suddenly turn us into Catholics?

My church is normally so "low" that we won't even display a bare cross at the front for fear of provoking idolatrous thoughts. But yesterday the church was ablaze with candles. At the front were painted plaster images of the Holy Family, a huge crib with a plastic Baby Jesus, the glittering pagan totem known as the Christmas Tree, and a winter flower arrangement festooned with the sacred plants of the Druids.