> No flaming please, this is something I’ve wondered since I beat halo 4 when it came out…
> Obviously there will be spoilers 
>
> Right, so Cortana, sadly, dies… As a Halo fan it is sad to see such an old and cherished character go, but as for Master Chief… Why is he so upset over it? I’m not meaning to sound heartless and like a -Yoink!- but I just don’t get it… I mean she wasn’t a real person? Just a clone of Halsey, right? (Not read any books, my lore comes straight from the games and halo wiki)
>
> As for when Lasky comforts chief and says “I’ve lost people I’ve cared about but nothing like you’re going through”. Lasky lost his brother? In my eyes that’s loads worse than losing an ai? Maybe I’m missing something in the lore… I don’t know… Can someboddy explain this to me?
This is the exact reason why 343i needs to explain stuff better. Most who haven’t read the books will not understand what’s going on.
Anyway, cortana wasn’t a machine. Rather, and Artificial intelligence derived from a piece of Halsey’s brain tissue. Cortana, while not a physical being was still theoretically a person. She wasn’t a program or a machine. She had her own thoughts and ideas, her own beliefs. Essentially, she was a person.
Now, when you spend years, fighting with that person and they save your life on more than one occasion, a bond will grow. That’s just what happens. Cortana was, for lack of better words, Cheifs last “friend.”
Lets look at who he’s lost. His squad (which you wouldn’t know about having not read the books) he hasn’t seen in years, Keyes (both of them) are dead. Captain keyes was sort of his friend in one way or another. Then there’s Johnson, who was killed by 343 Guilty Sparks laser face.
So all he really had left was cortana, and now she’s gone (in theory.) Chief isn’t a machine (as evidenced in the books and in Halo 4) so it’s obvious he’s going to feel sad when he loses someone he could call a friend.
tl;dr: Cortana is theoretically a person and chiefs last friend (that he knows is alive). Now as far has he knows she’s been destroyed.