Bucky was the one who motioned for Sam to go over to him. Either he’s psychic or him and Steve planned this out in advance. I got the impression that Old Steve and Bucky had met before and maybe even both agreed that Sam was the right choice. Bucky seems more at peace with living in Wakanda, he only came back to fight to help Steve and defend the planet.
I think so, too, that Bucky knew what was going on - why give that superlong goodbye-hug before Steve left if you were about to see Steve again 5 seconds later? It was initiated by Bucky, not Steve.
And I also doubt that Bucky has any interest in picking up the shield: Back in IW he was quite resigned to be called back to fight - and that happened a few days for him, not 5 years ago.
He [Tony] gets to decide that everybody killed in the chaos of the snap is Wicked Witch of the East dead so that he gets to have a wife and daughter without the hassle of making up with Pepper again. And he gets to lay this down without anyone even arguing! He gets an apology from his dead father for being a bad father even though the on-screen premise is that Howard Stark is talking to a random stranger.
Okay...
the Howard thing: He doesn't get an apology. What he gets is context. First of all, Tony's a father now too, he knows how fatherhood changes perspectives. Secondly, it was heavily implied in previous movies that Tony felt his father either didn't love or didn't care about him, that he was essentially a nuisance to him. Now he learned that Howard was very much looking forward to his birth. And thirdly, we learn that Howard himself was raised by an abusive father... which leads us back to point one: Perspective/context.
Where did Tony have to make anything up to Pepper? She sent him to the Avengers. And TBH, which father would give up his own daughter just like that? But, of course, Tony's egotistical for laying down limits.
And *by the time* they started their timejumps there was no way to bring back those 5 years. They didn't have enough Pym Particles, the platform only in 2023... So it's a non-issue anyway.
And let's assume for one second that they decide, after the collection of all the stones and before Thanos arrives, they send back Bruce (or all go) to 2018 (because Steve brought back the Particles from 1970) and Bruce uses the stones then to bring all those back... wouldn't matter for the "original" timeline: The snap-reversal would create another diverging timeline, the original continues to exist - and Thanos would arrive on earth or 2023 (original timeline), this time there wouldn't be any stones (because sent back to 2018), neither to recall all those who didn't survive the snap, nor for Thanos to finalize Earth's destruction, so Thanos armies would just destroy everything in a conventional way.
But let's all be satisfied with the simple explanation that Tony's selfish...