Why do people get leavers in games? One simple answer... cause they are stupid!
Here is the game I left, even after warning.
We start the game with myself (Sedna), an Oak, and a Regulus, all on Dark, vs. the Light team, with 2x Regulus' and a Sedna. Now, playing vs. 2x Regulus is bad enough, especially when they are both sitting there sniping the exact same target at the exact same time (perhaps on a lan?).
So our Oak is kind of feeding. He isn't n00b or bad, to say, but is having a rather tough time, especially with the snipes. So he feeds a bit and after being called 'Primary' (Eve lingo *yay*) multiple times, he leaves after 5 or 6 deaths. So now it is just me and the other Regulus on my team with a stupid AI Oak.
Light takes advantage of this, and before me or Regulus suffer any more deaths, our AI has already died 3 or 4 times. So Light is having fun feeding. Yet, they are still going 3 vs. 1 or 3 vs. 2 against us. I tell them that them that with their feeding and us having an AI is bad enough... but if they wanted me to stay, to stop going 3 vs. 1. The only time they went 3 vs. 2 was when I had the dumb AI with me (lots of help it is).
So after my warning, I am going up against Regulus and Sedna, and what do you know, the other Regulus is still sitting there sniping me as well. I said my goodbyes and left the game. Perhaps this is wrong of me, but I want to have fun in a game and I was not having very much fun. Of course I was playing with NA. If I was playing EU, people may have been more understanding, but although I myself am American, I will proudly say that we have some of the dumbest people in the world.
In this situation, people, if you want others (your opposing team) to stay, I suggest you keep the game balanced and stop going "omg lolz I pwn!!" when the game clearly becomes unbalanced for the other team. Stop feeding off the AI! Stop ganging up for the kills! Play it a little more fair and perhaps you will not have leavers ruining your games.
Just to be fair to myself, I will let you all know there are many games I stay until the bitter end in... even when I know our team will lose, or, is losing. So many of my teams Citadels have I seen fallen... so this is not just grief talk, but instead, some advice. Anyways, lemme know if you agree or disagree with this.