I have a hypothetical for yousall. I'd actually like some serious responses but feel free to add some silliness in. It takes place back in old England. Back when knights, duels, and virgins in towers were common.

Say you're a knight, smitten with a fair virgin whose father keeps her cooped up in a tower. Unfortunately for you, some big burly knight has already asked her father for her hand in marriage. So you're like "Dammit! I'm so smitten with that fair virgin! I can't just give up . . ." So you ask the father for her hand in marriage as well. And the father's all like "Psh. Fine. I'll make you a deal. Whosoever wins in a duel between you and this big burly knight gets to marry my fair virgin daughter."

So you duel. And you fight for days. Yes, days. After say three days, you're both tired and bleeding and too tired to get up. Neither one of you will probably live due to infectition or blood loss. Just then some stranger comes by, kills the big burly knight with his dagger, and marries the fair virgin. You proceed to die.

Now say you knew all this would happen before you started the duel. That you knew you would never marry the fair maiden with whom you are smitten. But, because of you, that stranger lives a happy life. Would you still fight?