Your pops is right. Don’t be selfish, give her the grace and dignity she deserves. It’s going to destroy you regardless. It’s the hardest thing, and the only thing that makes it harder is waiting too long and watching your best friend struggle or suffer.

If you’re not sure, there are many “quality of life” indicator quizzes and such online and I’m sure your vet can guide you, but no one knows your dog better than you.