[Keith just shrugged at Chekov's apology.] It's not really a big deal. I don't really have anything to go back to. Not like the others do. [Beyond that, he'd never really thought about it.]
I guess that makes a difference. We left because a destructive alien race was probably going to destroy Earth to steal the weapon we'd found hidden there. So, we took the weapon and ran, hoping they'd follow us and leave Earth alone. So far, we think it's worked, but we don't want to risk going back, yet. If Earth is safe right now, then going back could potentially mess that up.
[Though, if it wasn't, then things could be a lot worse already, and Keith had considered that. But, they weren't in a position to mount an all out attack like that, so it was better to wait until they were stronger, and had all the Paladins back.]