Thanks for pointing this out, Deade.
This is another important consideration I've been observing with family and friends. A person might think they have the security of being able to sell their house at any time and be able to use that money for whatever their next step might be, but if the house isn't selling, it can easily turn into double payments for everything.
I had some family members whose house didn't sell for over a year and friends who are still trying to sell former houses after a couple of years, and boy, would I hate to be in that situation.