Have we really been a Christian country at all?
The Christian Church only got popular because they decided to infiltrate and hijack non-Christian festivals and beliefs, then over time make people think they are Christian.
Bunnies and eggs are not Christian, they are fertility symbols, birth of new life, Spring etc. Most people celebrate Easter with chocolate bunnies and Easter eggs. A few sing songs in a church.
Midwinter feasting, giving of presents, bringing trees into the house and decorating, are not things Jesus ever did. But we now consider this
Christmas. just because you can go to mass and sing about Jesus at the same time of year.
We still do All Hallow's Eve, which derives from Samhain, the end of the harvest season. Thus the pumpkin surplus. The Church even tried to hijack that making it about Saints or something. Bit like Harvest Festival that is still preached about in primary schools - I've always found it odd that the school would invite a local clergy in to talk about Jesus for Harvest Festival, when it would be a great opportunity to teach kids about where food comes from, and getting more kids interested in farming, by instead inviting local farmers in.
The church has infiltrated our society over the last 1300 years, and today, few people question this. The same is probably true of all religions.
Remember, don't open your door to vampires, they'll suck you dry and take over your mind.