Willful ignorance?

Jeremiah 10:1-5 says

Hear what the LORD says to you, people of Israel. This is what the LORD says: “Do not learn the ways of the nations or be terrified by signs in the heavens, though the nations are terrified by them. For the practices of the peoples are worthless; they cut a tree out of the forest, and a craftsman shapes it with his chisel. They adorn it with silver and gold; they fasten it with hammer and nails so it will not totter. Like a scarecrow in a cucumber field, their idols cannot speak; they must be carried because they cannot walk. Do not fear them; they can do no harm nor can they do any good.”

Yet Christians all over the world put up Christmas trees each year. Every day I'm more convinced that the Christianity we see from the majority of those who claim it to be their religion is the watered-down commercialized version.