Christians who do NOT celebrate Christmas

If you are a Christian who does NOT celebrate Christmas, I would like to know your reasons. Also, it might be helpful to know if this is a policy of your church. The reason I’m asking about this is because I know my neighbor is a strong Christian, but he and his family never decorate for the holiday or show any reverence for December 25th as a holy day. He’s given me his reasons, and I greatly respect him as a person, and I respect his decisions to live his life before the Lord according to his own conscience. Just want to hear from others too in order to get a fuller view on the topic.