If we blow them out, it's because we were supposed to. If we play them close but win, it's a bad win in the pollsters' eyes, and if we lose it pretty much removes any chance of being ranked the rest of the season. Add to that the fact that the team has to get up to play a team like USU that will be higher than a kite because it's essentially their bowl game, and that's a bad combination.
And then there are always the injuries that come with this game. I just don't see the point. Just go get another small school that wants a payday and fill the date with them.