I agree with your first post whole-heartedly.
Seems, sometimes, like people are just carefree about quitting (moreso, I suspect) because of the "distance" of the Internet. I suspect a lot of these people would NOT get up and walk away from the other players in a Monopoly game at someone's house if they were losing. And then there are the sore losers who just quit whether in person or over the Internet. I have no use for either type.
And what makes it worse is their repeated failure to "turn the AI off"

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To sumarize, I empathize with you.