It is definately a fair question and something I have been thinking about. Plus a possible move to Japan in the future would force me to sell it all anyway (wifes dad has pancreatic cancer so theres a chance we will need to move there when his health starts to go south).
In the meantime though since I have to move in two months I will need the storage at least for now and then start selling it off piece by piece on ebay if I go that route. Commodore, Odyssey, Intellivisions and the systems I don't care about much anymore would probably be first to go.
Edit: This is post 666 for me and the first time I have ever publicly thought about selling off the collection. Truly a post of doom!