Me too. About 10 years ago my wife had surgery for diverticulitis, then the next two years she suffered from kidney stones. She told me she had never really cared that much about camping anyway and she no longer wanted to go. I knew I was not ready to stop. She said go ahead alone. It felt really awkward for the first trip, because I always pictured the two of us traveling together; I actually felt sort of guilty to be having fun alone. But then I adjusted. I found out how liberating it was to go alone, to be the only one I have to please with the food, campsites, stop and start times, destinations, etc. I call her nearly every day to talk while I am out there. She is happy. I am happy. Win-win!
YMMV.