A go fund me page is deserving if you have a financial problem due to no fault of your own.
-e.g. somebody made it impossible for you to maintain a savings account or a recent unforeseen disaster already deplete your savings account (e.g. your house burned down and you need now to buy a lot of things)
- your family/friends are unable to assist you with a loan or a gift.
- you cannot get a bank loan or use care credit (you need to disclose why and it shouldn't have been because you maxed out all your credit cards on bar bills).
- you provide a statement by the vet what is needed and why and how soon it is needed, the vet should be named so people can check with the vet. It would be better to set the page up so the money goes to the vet, not you.
- you need to be comfortable to disclose quite an amount of personal data so people know it is not an internet scam. Unfortunately for those who really need assistance scams are spoiling it for them.
If you could get credit, but just rather wouldn't pay it back, because you still need to pay for this brand new ferrari you bought two years ago, then why should anybody sponsor you? The few times I've looked at fund-me pages I was left with the feeling, why the hell would I pay a strangers bill if they aren't even capable to give me a compelling reason?
I've seen people discussing setting up pages for stray dogs so the shelter doesn't put them down, which I think is a legitimate reason since the dog isn't owned by anybody. But then go fund me charges an decent amount and generally people agreed it made more sense to solicit money going directly to a vet via social media. That might be an option for you.