The consensus among UK fans(not to speak for Seth) is that:
a) IU hasn't been a legitimate rival for UK in decades, they were at best the 7th 8th biggest games on UK's schedule the last couple years of the series, and much lower than that for the decade before. UL, UNC, Florida, Tennessee, Vanderbilt, etc are all bigger games than IU.
b) After the way IU fans reacted after that win in 2012, if we never play in assembly hall again it will be too soon.
The main thing being that UK simply doesn't need that game on our schedule, if IU's fans are going to be classless jerks to our fans and players, we can go and schedule any of a dozen other better basketball programs in their place.