Are you one of those people that doesn't quit a game until the game itself tells you you've lost, or do you cut and run when things are looking bad? How bad do you let it get before you admit to yourself that you've lost and that it's time to start the game over again?
In my case, I quit earlier than I need to. A few relatively replaceable soldiers die and a few air battles don't go my way and I'm ready to throw in the towel and start again. I did the same thing in XCOM 2012 if I couldn't finish Classic Ironman without losing countries or soldiers. Might as well just start over, it's not good enough.
What about you? Do you quit because you're overly perfectionist, or because you have a realistic expectation that you're going to lose? Or do you fight until your last breath with the aliens knocking down your door shouting "From these cold dead hands!" like Charlton Heston?
PS: I didn't make this a poll because I wanted discussion about indicators that you've lost, so that perhaps I can use them as metrics myself.
PPS: The other option: you were actually doing well, but then the new build came out and screwed your saved games