[ Luffy isn't one to argue morality or the semantics of it. He just accepts Eren's words, takes them at face value. It seems fair enough to him. ]

Everywhere has people. But pirates are pirates.

[ There's some distinction in Luffy's mind, some way to say that pirates do things regular people don't do, but he's as articulate as always and just leaves out how he got from A to B in his head. ]

Anyway, it doesn't matter. I'm gonna be the Pirate King back home and go on tons more adventures!

[ But, right, not everything is about. ]

What do you do at home?

[ He might have said that with a mouth half full of honey. ]