When we lived in Washington, always real. Or I should say, the present tree was always real. My parents are really BIG into Christmas, so besides the real tree we would have a couple dozen artificial trees of varying sizes (yes, really, the record was like 34). Even when I got a place of my own, one real tree and then I have about 5 artificial trees.
When we moved to Arizona, we left our tree stand at my parents, correctly figuring we would have no use for it in the desert. I will not spend $70 on a 5' Douglas fir that I was used to paying $10 for. However, I did not foresee my parents moving to Florida and us in Colorado.
Here, we could have a real tree. But my tree stand is in Florida, and I don't want to buy another, since eventually I will get my tree stand back, when we move our Wilderness Lodge furniture up here. So this year it will be artificial.