You can't change my mind. 
Discussion
I wouldn't dare. In college we would have three rooms with Ethernet running down the hallways. Just sceaming shit talk back and forth. Gaming at it's finest.
Which Halo is best?
Is it cheating to say "The Master Chief Collection?"
After that they nuked local co-op, and that title dusted off and remastered the classics.
I remember playing 1&2 on several large projector TVs at friends houses.
Several xboxes with split screen all around.
My wife enjoyed live local co-op together years later.
I'm a Halo 2 Maxi. We used play 4 people on unbearably small TV's