Because Loki wasn't exactly a benign pagan god. Because he'd spent so long pretending to be something he wasn't that he couldn't be anything else any more. Because he should have tried harder to convince Michael to let it go. Because he abandoned his family.

Because he did nothing to help humanity, those who mattered and suffered most, until it was almost too late.

"There's reasons," he said with a dismissive shrug. "I debunked that theory a while back. Right now I'm just running with an alternate reality, but it's too seamless to be Lucifer's doing. I know how he builds things, and this isn't his style. Not exactly, anyway. And Michael doesn't have the imagination."

Therefore, left unsaid, there was only one.