FFS, I've been meaning to follow up on this, but I'm doing a "forum lite" week, as we're on a trip. The response above is so off the mark that apparently now is the time to elaborate.
As I mentioned upthread, I believe this topic is less of a concern for this group. Frankly, though some believe one should always have a mortgage, I do not fully subscribe to that theory, particularly for the folks racing from $2M to $4M...and Beyond!
The reason to hold a long, low, fixed-rate rate mortgage on an affordable home, in a country where mortgages are tax-advantaged, is that it allows you to invest in equities which will compound, resulting in a higher net worth faster than paying off the mortgage before maxing out every other investment option first.
The average shlub is assumed to be an idiot who will blow every spendable cent. (See: Dave Ramsey or Suze Orman for endless examples.) These people may never have the means to retire, let alone early. For them, the goal of paying off the mortgage is not unreasonable. At least they'll have something.
Mustachians are smarter more financially literate than that and know how to save and invest.
Since the goal of MMM, and by extension this forum, is to retire early, holding on to a mortgage (with the caveats listed above) is a smart strategy. Mortgages, if managed correctly, are a powerful tool for building wealth. The sooner you start investing, the faster compound interest will begin to do the heavy lifting. Waiting to invest until the mortgage is paid off simply means it's going to take longer, and you'll have to earn more money (i.e. work longer) to reach FIRE.
If you're on this forum, you're here to strategize so that you can at least reach FI efficiently. Ignoring the leverage a good mortgage creates over the imagined way it's going to "feel" to "kill the mortgage" before filling every other investment option makes so little sense that the blowback continues to surprise me.
Again, I don't believe this discussion is necessary in this group, but the recent scorn that's been directed my way is ironic, given that it's happening on this forum.
For the love of Dog, can we send this discussion back to the DPOYM thread, where both sides of the question are addressed?