I also do not find this post offensive -- and the fact that most voted for the 'no limit' makes my heart glad.
But 'no limit' has it's limits within every owner and every situation. Each has to be dealt with separately, and there's no right or wrong solution if love is the guiding factor.
We spent over $800 one weekend with Remy, our pointer. Over the years, thousands with all 3. With the loss of my 3 dogs this year I easily spent over $1500 just bringing them to the bridge and cremating them.
When Captain was diagnosed with a brain tumor, the neurologist told us it was 99% inoperable BUT there were 2 vets in the country that would do the operation and it would cost over $20,000. Did we do it? No. We weighed the prognosis (5% chance of survival), the cost, his age...lots of things -- and decided to keep him comfortable as long as we could. Even if I was Donald Trump I wouldn't have put him though the surgery.
After losing Rem and Chester, my sister and I had to make the same decision about my mom in June -- keep trying in vain to keep her going or just make her comfortable. It is a gut and heart wrenching experience.
I guess what I'm trying to say is what's been voiced before -- that each person has to make the absolutely most difficult decision on their own, and for each situation. We do what we can for the ones we love, human, canine, feline or otherwise, and do the best we can. That's what makes us kind, caring humans and why our dogs love us for the people we are.