In support of ligers

I was watching Nightline last night and there was a story on interesting animal hybrids.  These include Zedonks, Beefalos, Wholpins, and–as made famous in Napoleon Dynamite–ligers.  Besides the obvious appeal of creating something never seen before, is it worthwhile to create these hybrids? One “expert” said that creating these crossbreeds upset the natural order of…