Because God only comes out when it 'becomes horrible', after almost everyone on Earth has suffered and been frightened terribly by demons ripping their family apart. Until then he'd sit around and enjoy the meteor show, right? It'd probably be more:

[An asteroid slams into Earth. Not a single Hooters survives.]

God: Now it's personal.

[Satan enters]
Satan: This is madness!
God: No, this is...blahblah...[kicks Satan back into Hell]