it means you have nothing. no prospects for the future. nothing that can be taken away from you. nothing you care about. except revenge. its basically Drax's story arch in GoTG1 and how far did that get him?
I found it odd when Thanos tells Thor he should have aimed for the head. Since he could have also just aimed for the elbow just past the gauntlet and just lopped half his arm off. Problem solved.
The whole movie just exists so next time Captain Feminism can say, "Hey guize, let's just chop his arm off !" while all the men look at each other and agree womyn should be running things because they're stronger and smarter.
And my computer is close enough to the TV that I can hear my wife's shows, so it's constant: "They said no man can do this, but luckily I'm a WOMYN !" 10 times a week.
Except Thanos still has it (the gauntlet might have burned, but he didn't leave all those gems littered around).
Expectations are that they use Quantum Realm shenanigans from Ant-man's portals to do so (apparently, Quantum Realm has weird time aspects). Probably tweaked by Tony (when he and Nebula have finished repairing the ship or whatever and reached Earth) and powered by Capt. Marvel.