Let it go as the popular song goes. Keep a few items that were produced in ultra low numbers that you really really like and might be able to use in a club in your destinations. Keep the cash or value in a mutual fund for a future hobby.
My wife wants us to move to cali and I'd let go most of my O scale except for a club I would join. Fortunately, I have a ton of n scale too just in case that scenario solidifies. Then that 10x10 bedroom becomes an n scale layout. hehehe.
For now still holding out for an east coast home and basement.
My East Coast Home (Boston) 3 story house, 4 bedrooms, 3 bath, full basement with utilities and washer/dryer all moved to the 2nd floor will soon be for sale :-) Also has 2 car garage. I'm a 2 min walk to the train and a 10-15 min ride to downtown Boston. Oh and I live 6 houses away from these guys: http://www.bsmrm.org/ they are 2 Rail O however!