Maybe I can't, it's a very hot potato like I said in the OP, but looking at pets on a global scale...
Some think it's OK to have monkeys as pets or caged "friends"; some think it's OK to go along with breeding and holding endangered species in their cages and aquariums.
Some think it's OK to breed, fatten and eat dogs, mice, rats, and other species we deem unsatiable to eat - something the Western society has forgotten with their love for meat and the industrialiced process that will cancer and cripple a large amount of the human race until we put a stop on it... at leadt for a while.
If someone can honestly argue that a life in Africa, about to be demolished by famine is more important than that of a dog's, cat's or any other pet's, they are fucking deluded.
No matter how much you love or have loved your pet, we are still a species that places itself above other species, and to think that one of another, lesser species doesn't matter as much as one of our own, while arguable, does not not change the fact that it's a very weird and unnatural way of thought.