I'm dreaming of a White Christmas

I've been seeing a lot of white Christmas trees on blogs and pintrest this year, and I really am loving the way that they look! I've never thought much about white Christmas trees, but since I may be buying one this year (the one I have now is a 30-year-old hand-me-down), I've been paying attention.

Here are some of my favorite white Christmas trees. What do you think? Are they a fad or are they here to stay...and worth me buying one?