lack of castmates >:

[mankindly]

Not that I wouldn't appreciate being able to keep an eye on my Horsemen, but can you even imagine how I'd explain them to people? .. Except Death. I mean, he's a lot more laid-back about things than the other three.

And Crowley and Aziraphale would hate it there, too. Very few books, no decent tea, lots of toothy monsters and slasher-film sorts.