I totally agree about puppies - not a huge fan. Millie was ten when I got her, and she was my heart dog. But my brain was on the fritz. I admire that you can make a decision (need to travel, no dog for now) and then stick to it, even in the face of overwhelming grief.
Fish may be your dog, but sometimes I think Millie sent him to me as a joke and she's laughing at me right now. That was kinda her personality.