. they all say the same thing...there is no such thing as peacefully at home.
I'm very sorry for your loss of Nacho. And have read your final post before he went, I do think you made the right decision.
However, while I don't know about cats, I do know that dogs can go peacefully at home. My mother had a dog that everybody told her she should have put down, but he was still happy and apparently no trouble. She came downstairs one morning and he was curled in a ball, the way he'd always slept. He'd passed peacefully in his sleep. On line is not necessarily the last word on what to do.