Never left a game early at home or away, but I have to admit that after flying in from the States in '99 for the Play Off Final, I asked my younger bro' if he wanted to leave just before the end, because I was absolutely knackered after being up for about 40 hours by then. He gave me a dirty look and shake of the head and that was that! Stayed and vowed NEVER to even bring it up again!
In a similar vein, my Bro' never bought a program me all season and read my sister's (we all have SCs together) whenever there was something he wanted to see. Against QPR, I had heard from someone in the City Store that they were running out around the ground, so I picked up two....without telling him! At 90 mins, I thought I had better not tell him or give it to him. About an hour later, when we were ready to leave, I turned to him and said, "Here you go! Glad I can finally give it to you. You definitely weren't getting it if we lost, because I would have been blamed forever!"
Now, I feel like we are (almost) even, and he has a great souvenir of the best day in his City lifetime! :-)