Having said that I feel there is an element of utility in the person-pet relationship. It certainly isn't a relationship of equality is it?
No, but then neither is a parent-child relationship, hence my remark about babies and toddlers earning their keep. Michael Faraday famously asked "What use is a newborn baby?" to make the same point: babies especially are totally dependent (far more so than any pet) and require a
huge outlay of money, time, effort and attention just about every single minute of every day. They take, take, take, take, take and give nothing of direct practical utility back - but people still do it.
If these animals were coming to us from the wild of their own volition and staying while remaining free to leave... Perhaps that would be equal.
According to what I've read that was most likely the case with cats and dogs. Cats demonstrated themselves to be useful at catching the mice and rats that ate valuable stores of grain, for example, and were kept around - rewarded with food - for that reason.
As it is they exist and live entirely at our behest. We sterilise them for our convenience and subject them to various other medical procedures, including euthanasia. It would be disingenuous to deny that on some level pets serve a purpose of our making, nor of theirs. Just like any other other possesion. All the same they can live very happy lives and enjoy genuine love and affection from their owners. I have no objection to owning a pet.
Given the colossal amounts of money spent on them the purpose is surely companionship and the love and affection they provide - but as I said yesterday, that works both ways, so the relationship (at best, anyway) is symbiotic. It's a little more difficult to see what's given back in the case of something like a snake or an iguana, but with a cat or a dog - the animal species closest to humans and their everyday lives - it couldn't be more obvious.