I think you are practical as are my husband and I. Our livestock and pets are well taken care of. They live wonderful animal lives. And as others have said, "serve a purpose". (with the exception of my daughters indoor cat

) We have spent, in the past, hundreds of dollars on two different cats, just to have them dissapear, most likely been eaten by coyotes. That won't happen again! Our vet, like most, always suggests, test for this, test for that. "You can get a animal credit card you know." After politely explainning to her that we don't have insurance on ourselves and can't afford to go to the doctors on a whim, we certainly aren't going to put a ton of money into an animal. She ususally comes up with a more resonable suggestion.
I agree with another that said it would depend on the animal as to what resources would be used. Our 11 Year old dog that has had a wonderful life, well we won't be spending a lot more on him. Our young heifer that should provide us with many years of calves for meat and $$$$. We would invest more into her. And that is what we would consider it, an investment.
Many people unfortunatley have forgotten that animals are animals. Our neighbor has a Yellow Lab. They put a rain coat on her when it's rainning and a winter coat with a "fur" collar on her when it's snowing to keep the water off her.

She is a water fowl breed, originally bread to hunt ducks; which, "say it with me class"..."are in the water!" How humiliating!!