I don't know that the "there are more important things in life" argument holds much sway. Of course there are more important things, but working out a way to play the Bills/Bengals game at a later date doesn't diminish those things, and for the players on the Bills especially, not playing it would prevent them from achieving the #1 seed goal that they have sweated and sacrificed for all season.
The best proposal I've seen is week 18, followed by Bills/Bengals and the NFC first round in week 19; then the AFC first round in week 20, then move forward and eliminate the week off prior to the super bowl. That is pretty fair to all the teams involved.