I don't. They throw the organisation of my BDs into disarray. What's worse is how WWE BDs are unnecessarily thin - even the ones with two motherfucking discs in. And the storage capacity of Blu-rays is as such that you never actually need two discs. Why they keep doing it is beyond me.
Because one disc just sound a bit shit after years of double DVD's. The box sets are fucking awful, but that's why I have my naughty corner.