How many Christmas trees are too many?

Wizard of Oz/Guest Room tree. I've made changes to it since I've put it up and I'm not completely done with it yet. But here it is so far.

Main bathroom tree

Master bedroom trees

Kitchen Tree

Sports Tree

Main Entry Hall Tree

Sun room tree which is my Charlie Brown tree.

Plus all the little trees outside.

And I still continue buying them.

I think it's a sickness.