What's the deal between cats and Christmas trees?

Theres nothing wrong with having your Christmas tree up..I still have mine up. Cats LOVE trees! Whether they are real or not, they are fun to climb..it's pretty much like the coolest toy ever to them! And trees are even better when they have little things hanging from it that they can swat at! So yes, cats do go crazy when it comes to Christmas trees but I think it's cute! :) and I'm happy to see my cat do something that comes naturally to him!