Worth every penny though that was a year ago it saved his life and he’s fitter than ever now.
I think that’s the crux of it. The question becomes, “who are you actually doing it for?”
I had a cat who went missing, then turned up a fortnight later utterly broken. I took him to the out-of-hours vet who gave me a list of things wrong with him and said “I can treat him, I’d love to treat him, but he’ll need injections three times a day at regular intervals for the rest of his life.” I thought for a moment and then said, “logistics and cost aside, if I were to do that, would he be ok?” and the vet said “no, he’d still be very ill.” At which point the unfortunate Plan B became a no-brainer.
There’s little point in hemorrhaging money on vet bills, no matter how loved the pet, if you’re just prolonging the agony. That’s heartbreaking (and bloody expensive) for you and cruel to the animal. On the other hand if it’s a lump sum fix and you get your family member back healthy and happy, that’s a compelling argument.
Generally, I’d like to think that folk make sensible decisions and don’t keep pets who are suffering around for selfish sentimental reasons. In some ways, animals are better off than people in that respect.