He hadn't had that. No one had been close enough and - look, he's not thinking this to feel sorry for himself - but no one had been close enough to him to turn to him in that moment. If Tony had been there, and one of the ones lost...but he was not. They're here instead.

"No one wants to believe something like Thanos could happen." No one wants to believe all sorts of things could happen, but just look at history. "We're going to get back and fix this, somehow. No matter what it takes."