I thought the same thing until, many years ago, the ex was considering taking a job in California. I learned that houses in California do not usually have basements. So you get an extra bedroom or two and store your stuff above grade.
I'm glad we didn't move out there. Beautiful and warm, but the lifestyle is not quite for me.
Shoot, I don't have a basement now. I haven't HAD a basement since I was about 13 years old.
If you got more stuff than your house/garage can hold - sell some stuff.