I think I have sourced the root of my problem. The last two holidays we have had have been with relatives and, much as we love them dearly, we did not have our own space. When we stayed with my stepdaughter in Alaska we shared a bathroom with my sister in law who also came with us. We also shared every waking hour and every meal with her for 16 days. My stepdaughter gave us space but she did not and I think everyone needs a little bit of privacy. Similarly when we visited my other stepdaughter in the UK recently, we had to share a bathroom, meals and every waking minute. I have realised that, not only do I need my own bed, I also need, at least occasionally, my own space!