I honestly think there's a lot of people who don't think losing something like that is a possibility.

... I know I never did.

[And maybe he's still trying to process it, in some way. Because who knows if they're ever going back to Earth. Especially now.]

"Good or bad, nothing's forever". Did you ever think about getting into the self-help business?

[It's a joke. But... that's probably a good thing. Probably a good thing he's kidding around, at least a little.]