@surpasspro as you can probably tell you kicked over a bit of an ant's nest with your question. To summarize a lot of
sturm und drang that gets kicked off every single time mortgages come up on this forum:
1) Mathematically, given current interest rates and historical stock market returns you will always come out ahead paying your mortgage off on schedule and putting extra money into the stock market instead and for people who save the same amount (including principle pay down if applicable), not paying ahead on the mortgage increases your FIRE success rates.
1b) If you instead use historical mortgage interest rates (and impute what they would have been before 30 year fixed rate mortgages existed using their strong but non-linear correlation to US 10 year treasury interest rates), 85% of the time you'd come out ahead paying your mortgage off on schedule and putting any extra money into the stock market instead.
2) Some, but not all, people get a great deal of emotional satisfaction and or release of stress from having their home completely paid off. MMM emphasizes conscious spending on the things that make your life better, so if you figure out you're one of those people, it is completely okay, and even makes sense, to give up a lot of money (/work longer) to sleep better at night.
2b) But if you can find a way to get the same benefits of sleeping better at night through convincing yourself that you'll have plenty of money to pay the mortgage, you'll have to work fewer months (or years depending on your situation) so it's worth exploring whether you can convince yourself of the above before you decide you're a person for whom the financial sacrifice of working longer/saving more is the only way to get the emotional reward of peace of mind.