Artificial Christmas Trees

With all the talk of Christmas lately, Matthew and I had this conversation...
What exactly is the difference in real and artificial Christmas trees?
Artificial trees are used every year and are man made.
Why do we have an artificial tree?
Because some of us are allergic to real trees. Besides why buy a new tree every year when we can reuse the same tree every year? (The tree we have was in Jason's grandparents house when he was little.)
So why do some people buy real trees?
They like the smell, they just think it is more Christmassy.
Well, that just seems like a waste of God's resources doesn't it?