Nothing. Except leaving you high and dry and with a de--- [ he swallows that thought ] Let's just say that I've got some enemies. And there ain't a single one of 'em that plays nice.
And beside all that, we're not going to stick around here for that long anyway and once we get out, you'll go back to your world, and I'll be back in mine. Sounds like a pretty good reason not to get too close to me. [ considering, you know, he's got the apocalypse to deal with and all. ]