There is too much uncommon ground to come to a compromise. For a lot of people Its hard to respect anyones sense of "common courtesy" when those people also have such a different view on things as common as eating meat. There is no community sense of "the right thing". For some people the prevailing moral cue is to not chance an animal bothering or endangering others on an airplane. and for others its not letting the animal feel abandoned or being endangered at a kennel. Another problem is that air travel can be overly stressing for both humans and animals. A lot of people don't adequately train their animals to be in a foreign, cramped, crowded environment like that. But Ive also seen my fair share of humans completely lose their cool while traveling.