Oh, I understand the reasoning fully. And it fits with his character. It's that character flaw and how it hurt everyone else so exponentially that made me like him less.
I think more like Iron Man, who's pulling the gauntlet off and pleading with him, "LET IT GO, WE'VE ALMOST GOT IT". Because, I mean, once you have the stones, you could theoretically bring her back. They're basically dragonballs. At no point in this whole two movies were they any closer to defeating Thanos than when Quill got mad and punched him in the face. He let his rage win out over the fate of literally half the universe. I wouldn't respect a leader like that.