not OP, but at that point I imagine the equation changes: stability becomes less important when you aren't the sole provider for a pile of people, and/or once cost-of-living goes down (e.g., paid off mortgage).
I was able to pay off my mortgage about a year ago (I am in my late 30s), and work has taken on a new aspect for me. I feel a bit more comfortable challenging the status quo and trying to take on more "interesting work". With that in mind, I am still attentive to the fact I need to maintain a sustainable career for another 25/30 years.
Many people in my circle are proud of paying off mortgages, so I kind of assumed by default that it is a worthwhile thing. But looking at the numbers I'm not so sure: it seems much better in current market to cash out as much as possible and let that money sit in an index fund. I guess the main issues are some risks with downturns and/or liquidity.
My first experiment with this certainly hasn't yielded the focused directed effort I was hoping to apply. I've worked permanent positions which felt a lot more like contract positions. At this point the main thing is for similar money I'm having to put a lot more effort into keeping track of my taxes.