Niftykat - Don't self police. If you have an issue, hit the (!) button.
And FYI, I have had more than my fair share of pets die. Do you think it's easier for me than it is for you? Do you suppose while I held my dog's head in my lap and wept until I threw up that it was EASY for me to let him go? I begged the vet to do something for him, even knowing that he was 14 years old, a giant breed, and had long outlived his projected life span. Don't ever condescend to me about how HARD it is for a pet to die. Nothing irritates me more than people who think they are the ONLY ones who know how it feels. Just because every time I lose a chin, a dog, a horse, a cat, a rat, or any other animal in my care I don't post about it doesn't mean that I don't feel deeply every single time. It only means that I don't need the drama of everybody in the world knowing my business and that I prefer to grieve privately.
No one is even attempting to be mean to the OP. Everyone, however, is concerned about a chin who is in agony with a mouth full of pain, knowing it cannot ever be fixed, no matter how many trims you do. Is the animal alive because it's enjoying the pain or because the owner can't let go? I said it before and I'll say it again, quality of life should ALWAYS come before quantity.