I think you should see his passing as natural even if the vet helped him leave. And you did give him the best life a cat could hope for. You loved him every day no matter what. Sometimes the body wears out even if the spirit doesn't.I know they say that time will heal a broken heart, but it just keeps tearing. I keep thinking of him, and his last moments with us. I hope he knew we were there for him and loved him. Each day that passes just keeps getting worse. My place is so empty.
I'm here crying over my lunch because I imagined hearing him in his litter box. He'd come over, sit on the chair next to me, his two front paws on the arm and meow loudly right at me because he wanted to know what I was eating.
I really miss him, and I want him back.