Bucky frowns a little, more in confusion than anything, at the explanation. It does sound like a trip, which is not exactly a good thing. Especially not if it's airing potential dirty laundry, which he kind of assumes when he hears "having to watch people's memories." He's definitely not thinking that means seeing people enjoy happy, carefree childhoods.

Then again, maybe it's just because his and Steve's weren't exactly that, much of the time. Maybe it's different for most people - and then Steve starts explaining his ship's crew, and... well, that idea goes right back out the window. (Airlock?)

Still, his smile a wry. "Well, when you wake up in the future and get told to stop an army of aliens pouring out of the sky... I guess at least it puts some of this shit in perspective?"

At least Steve might actually get what that feels like, for better or worse. But if he does, maybe he'll at least laugh.