Moving is nothing new, but having been here for this is the longest we've lived in the same house for a long time. While packing, I've wondered "why is it that I hate moving and packing so much?"
My answer arrived in the form of a distant memory from First Year. I remembered Pierce (2003) writing something about how we "map" our routines onto spaces (our environment)*.
Now, I can complete my getting-ready-in-the-morning routines on auto-pilot, thinking about other things, because the way that my environment is set out supports my habits. But when I move... the objects that I need are in different places (and I may not know where they are), and the layout of the "spaces" in my home are different. I'm consciously aware about what I'm doing and where I'm going, and that complicates matters.
*Unfortunately my copy of the book is packed so I can't remember exactly what she said!
Pierce, D.E. (2003) Occupation By Design: Building Therapeutic Power. Philadelphia, PA: FA Davis Company
Excellent link to theory. I'm like you, hate packing/moving, even not that keen on holidays for the same reasons. I am a homebody.