My vet called today to check and see how we are doing. He said that he and the office staff took this one particularly hard because they have known our little dude for so long and so well. He boarded there whenever we traveled. He had medical issues that mandated fairly frequent care. They all knew me whenever I came in; we all used to say I should have my own dedicated room.
He expressed to me that he was worried I might be second guessing myself and wanted to assure me that he would not have let me do anything too soon that was inappropriate, at least without making his case strenuously. That there was only one direction we were headed, and it was going to be traumatic for all of us, most of all Sparky. That dogs rarely go gently into the night and that we had saved him much pain and suffering.
That was a very nice thing he did, and it does help a bit.