It's just this thing we did. It started when my siblings got older and wasn't around as much, so my mom started scheduling putting up our tree and it just became a tradition.
On the first Friday of December my mom would make this big meal and then all of us (my parents, my siblings and I) would go out an pick out a christmas tree. Then we would take it home and decorate it, and eat cookies and listen to christmas music. I mean, I know, it's a little lame...