"What else am I gonna do." The only thing he wants to do is go back to his hut in Wakanda and take care of his goats, but that's off-limits now, given the Zemo thing. Even if it wasn't, his hut got taken over and remodeled by a Wakandan family during the snap, so there's nothing really to go back to.

So he'll keep doing this. At least now there's Steve, so maybe he won't feel quite so alone.

And there's a new thing to figure out now, anyway. "We've gotta call Sam, Steve. Let him know you're back, and find out what happened to the old guy pretending to be you." And Bucky will try not to rub it in Sam's face that caring about what Steve thinks might still matter some.