Co-Op, no split screen??

Just wondering why there is no co-op experience with split screen? I understand its all about the experience with multiple player in the PvP, but what about the campaign? It is cool how through Xbox Live there is co-op but when the first, second, and even in Halo 3, we could split screen. That’s what made the campaign fun for everyone at home, playing together on one system, now we need to own two Xbox ones just to play together and have two Xbox Live accounts? This ruins the campaign part for me.

Blame the 1080 p, 60 frames hype train.

There is a thread about this already, please try to keep this in the same thread.