@Tanya You never gave up and Rhubarb is still here. I just don't think we have the right to make a life/death decision for them, until there is NO hope.
We definitely agree on this... Though I know that sometimes no hope comes at a different point for different circumstances.
For Ruffles, no hope was after one vet visit, because my family couldn't afford any more... I had finally talked my Mom into taking her to the vet because I thought that maybe Ruffles was eggbound. She was staining so hard to poo, was breathing shallowly and seemed to be swollen around the vent... But was so much worse. She only lasted a few more weeks, then my mom had to make little payments every month for almost a year to pay for just those two visits. Ruffles was a cast-off bird that someone didn't want when they had their first baby so we adopted her. She had a good, if somewhat wild, eight years with us. My mom knew how much I loved Ruffles, and was willing to sacrifice to pay for a vet visit.
With Rhubarb, my husband and I had the resources to push no hope into hundreds of hours (meds alone were 15 mins/day, 365 days/year for 2.5 years... so > 300 hours not even counting hand feeding, wound soaks and dressing, making soft collars, etc.) PLUS thousands of dollars (and counting) of care.
I want to be encouraging but also keep in mind both of these experiences because sometimes life is just plain cruel and what we want gets shredded by our limitations.