As much as I am a "casual" gamer at heart, my impatience with video games leads me to only be satisfied through winning. Or, as Thergox said, you could just say that winning is how I play casually.
In a battle/challenge scenario, if I don't "win," even if the outcome doesn't necessarily alter the events in the game, I find myself resetting to ultimately win. Since I'm impatient and therefore despise grinding, this happens regularly. It's a bad habit and I hate it, but it's worth the feeling of loss I get when I...lose, lol.
On the other hand, in COD games I don't play to get 1st place or even defeat the opposite team; to me, "winning" is simply getting a positive K/D, haha.