People trying to make the comparison between what Plauzee did to a game that has already begun are way off base.
2 main reasons in my head.
First, as Mers stated, why is it my fault that this player has disconnected? Why does he not have a back up? Better yet, is he stealing someones wireless connection to play?
Second, and this is dependent on each game... what if it is 10 minutes into play and I have a 2-1 chip lead? I am supposed to just assume tie game and ship back? No, I blind him down because I think I am better than him anyway