We secularised the Sacraments, we turned the Mass from the Holy Sacrifice at Calvary to a big meeting for a group hug. One of our toys was called Confession but we secularised that by deciding we can talk to God on our own thanks and the priest is just some bloke in a box and if he's just some bloke in a box then we might as well use the box as a dusty old store cupboard.
We filled those cupboards with old books of chant that we don't need anymore since we secularised our music. We secularised our buildings which are no longer designed to lift the mind to thoughts of heaven but rather to be practical, functional structures like secular leisure centres.
We secularised our Bishops by turning them in to faceless managerial committees with just enough authority to tie their own shoelaces so long as they get it risk assessed first and certainly not enough authority to actually reply to the letters you send them about the Holy Days of obligation that we secularised by, well, not having them.
We secularised our schools, we secularised our charities and we secularised our families. Prayer? Sacraments? Feasts? Seasons? We barely even know what they are. Lent is when people tell me that rather than fasting they "would rather do something useful". Baptism is for getting children in to schools, no wait... these days, there are no children to worry about.
But, as I say, perhaps we should be thankful that the world does keep some sort of Christmas - if it didn't, then we might have dumbed down Christmas as well - if not moved it to the nearest convenient Sunday. The only reason we still keep it on the actual 25th December is because that's what the world does. Otherwise it would be transferred like the Ascension, Corpus Christi and the Epiphany.
We can't say that Christmas is about more than just a secular celebration when we have reduced all the other parts of Christianity to be entirely secular!