because we all watched him die.
Yeah. We also watched the leader of the Brotherhood without Banners die. And be resurrected. By a Red Priest. And saw the evidence that it had happened multiple times. You know who else saw that? The Red Woman, who was there and witnessed it. Even she was surprised by that power.The same Red Woman who happened to make her way into Castle Black like fifteen minutes before Snow's murder, instead of getting her comeuppance with Stannis.
Aemon told John "Kill the boy. And let the man be born".
Sam told the kid, about John "he always comes back".
Do you think all of this is just coincidence? They're bread crumbs that you're supposed to be smart enough to pick up and follow.
Nevermind the fact that the significance of his secret parentage, that we all think we've figured out, is way too important to just kill off with no payoff.