It is a little funny. There was quite the "why don't we drop the series?" buzz around HN during the 5 year McCarney run. "Nothing to gain, everything to lose" kind of thing. I think now, as then, that there is an element of frustration-based exaggeration to that, but I think you can probably make a decent fact-based case that, in direct material terms, historically over the years Iowa has lost more from losing to ISU than we've gained by beating them.
CryFan wanting to drop the series because they can't figure out how to beat us though? That's just sad.