http://www.history.com/content/chris...een-traditions
People used evergreen boughs in various pagan worship at a few points in history. They also used palms, though.
Jeremiah wasn't referring to Christmas trees, since there was no Christmas yet. He was referring to idols-Ashtera poles and such-to which people bowed down and worshipped.
There are people who are convicted by Christmas trees. If they are, that's ok. If they aren't, that's perfectly fine too.
Christmas tree traditions started in the 1500s. They were not the offspring of a pagan tradition as such. Martin Luther had a tree, so they probably weren't Catholic either. Christmas trees haven't always been decorated with gold and silver, nor are they always now.
I don't have a tree. I would want a real one but feel bad killing one. I don't like plastic trees. So I don't have one at all. But it isn't a conviction, just personal taste.