Sure - that makes perfect sense. At least while life is going well it makes sense.
Getting used to always having a mortgage is very common nowadays, with the assumption is your mortgage frees up money to pay off higher interest loans, or is invested. Makes sense, even to teenagers in an AP economics class penciling out lifelong investments in a simulation. However, when something goes wrong, investments get cashed out, other loans go up and for many folks on the downward side of life the mortgage is still there. Sure, they should have planned better for the unexpected, taken a few fewer expensive vacations, but it is what it is for many old folks. Good decision makers or not, the ones with their house paid for are more secure than those who don’t.
In our family there are a lot of people in the trades. At one time workers comp was a good program - if you’re injured you get fixed and go back to work ASAP. Today’s workers comp will drag each step out as long as legally allowable, even against the recommendation of surgeons and doctors, so it’s not uncommon to have to sue the insurance company if something serious happens. A friend who detached a bicep at work was delayed so long he ended up with a partial disability and 6 months off work. Loosing $75k of income becomes the least of his worries if he gets pressured out of his job previous to the injury, or gets reinjured soon after returning. For a 45 year old, he was lucky to have a reasonable mortgage, because anything that wasn’t paid off became a big deal. This was during the Covid market crash and he had to cash out some stocks and got hammered. By the book investing works great as long as things are going well.
Making any investment decisions have to assume insurance of any kind is less than perfect in todays world.