This YouTubers sacrifice for his beloved pet

And putting her down wouldn't have necessarily been the wrong decision.

No of course not, if putting her down was the best decision for the pet and if he wasn't financially able to save her then it's only logical. However, for me, I would try and save any of my pets in a heartbeat over a gaming computer or something else I want/needed.

I'd mortgage my home.

I also thought it was strange that the owner was driving to the vet with the intention to put her down. I get making that decision after getting to the vet and going through the options of risks, costs, future complications etc