The poster of this thread does not have a Christmas tree and yes I do buy gifts for my family, but you can be sure I have never once told them those gifts come from Santa, nor do I encourage my kids to watch the garbage they put out at this time about Santa.
However, Paul is very clear, don't let anyone judge you about keeping or not keeping a feast day. You continually try to say I am the one judging you when in fact it is you that are judging others. This is the "true spirit of Christmas" -- if you don't celebrate it then you are scrooge.
These are the words of him who has the sharp, double-edged sword. 13 I know where you live—where Satan has his throne. Yet you remain true to my name. You did not renounce your faith in me, not even in the days of Antipas, my faithful witness, who was put to death in your city—where Satan lives.
14 Nevertheless, I have a few things against you: There are some among you who hold to the teaching of Balaam, who taught Balak to entice the Israelites to sin so that they ate food sacrificed to idols and committed sexual immorality.