Anne...why can we not do both ? We have been successfully combining the old festival of mid-winter/saturnalia and the Christian feast of Xmas for centuries.
As a firm atheist, I take no part in the religious element of Xmas, although I always listen and enjoy the 12 lessons and carols from Kings College every Xmas Eve on the Beeb.
It is often said that Xmas has become "too commercial these days" but when was it ever not ? The difference between now and when I was born in the 1950's is only that we have more money at our disposal now, and can afford to spend more.
I think it would be foolish to expect us to return to some mythical past, with Dickensian overtones. I have some Hindu friends who enjoy Xmas just as much as anybody else....big tin of Quality Street, fruit and nuts of the sideboard, a few days off work, and lots of presents.
Xmas isn't the sole preserve of the Christians. Some people want to go to Midnight Mass and some people want to lie around stuffing their faces...so be it.