I include my home value and my mortgage. If you don't include your home value, shouldn't you also exclude the mortgage?
If you've paid off the house and you're planning to stay in it or move somewhere similar, excluding it makes sense. If you just started a 30-year-term, it also seems fine to exclude it.
My mortgage is my biggest expense, and it'll be paid off five years or some from my FIRE date. But refinancing it to a longer term, selling, or turning it into an investment property are all possible options. It would seem an oversight to leave it out of my numbers.
Isn't the best way to think of this as the home as an investment that pays implied rent?