Lucifer, I love your tree.
I have a fake tree and prefer fake ones to real ones. Real ones smell better, but they also shed needles and make going barefoot in the living room a hazard to my foot's health. They're just too much of a hassle. Sadly, my current tree is on its last legs, I think it'll be retired after this year.
As far as decorating, I enjoy doing themed trees - last year I did silver and lavender, this year is burgundy, gold, and forest green. I have a large assortment of ornaments, so I'm usually able to use what I have to decorate. I will buy "picks" at the craft store to incorporate into my theme. The good thing about the picks is I also use them to decorate gifts, so they'll get used up the following year.
I love Christmas. We didn't celebrate when I was young, so I really get into it now. Christmas is the one time a year I lament not having a yard because I'd love to put lights in my trees and on my house. And in answer to the OP - I don't identify with any religion. To me, Christmas is a time to celebrate family.
Here is my tree this year, lit and unlit, and last years tree:
