For many people, their home is their biggest investment, so it only makes sense to think of it as part of what you have 'set aside.' But while your home is definitely part of your overall net worth, how it factors into your retirement savings depends on more than your current equity. It depends on whether or not you're going to turn that equity into cash when you retire.
I get emails all the time from people asking to use images of my artwork for free. At the beginning of my career, I figured these requests were an opportunity for me to get exposure. The problem is that once you grant permission for someone to use your artwork, you basically lose all control over how your artwork will be used.