Just because an artificial tree is reusable doesn't mean it's environmentally preferable. It's the opposite, actually. Fake Christmas trees have a nasty carbon footprint due to the fact that they're made from petroleum products, usually manufactured in China where environmental regulations can be lax, and shipped half way around the world to reach your home. Artificial trees off-gas, polluting the air in your home, and can't be recycled or composted. Real trees, on the other hand, come from sustainably-managed local forests (in my neck of the woods anyway) and are compostable. Choosing a real tree is one more way to buy local over the Holidays.