Since I don't think my rooting for my favorite team will have any impact on whether they win or lose, I continue to do so.I may do so in a less vocal than usual fashion if I'm concerned about my friend's feelings as he watches me cheer for my team's scoring. But I see no reason to give up my enjoyment of the rooting just because the win would cost him cash. My not rooting for the team isn't going to save him any money.
I get the point you're making, but at the same time, it doesn't make much sense. Do you root for your fantasy teams every week even though rooting for your players doesn't mean they're going to catch the ball? Rooting for something is done not with the expectation that it will change anything but how you feel inside in terms of what you'd like to see happen. So, essentially, you'd prefer your team to win over your friend winning money. Here's another way to look at this since some are taking the whole "betting" thing as a negative. We all play fantasy football. Your friend is in the subscriber contest here and can win $20,000 for 1st place. He needs Gould to make one more kick and he wins the money. If Gould makes the kick, it knocks your team out of the playoffs. What's more important to you? I found it interesting tonight when someone I know needed a late Minny TD to win a nice chunk of change in a fantasy league. Being a Saints fan, I was obviously rooting against the Vikes tonight. Of course, Saints are in regardless and a Vikings win isn't the worst thing in the world, but still what I would prefer. But, after knowing what he needed, I was hoping he'd win instead. It's just an interesting situation and made me think about how much I'd sacrifice both for myself or others to see my team do well if given the option.