An illustration - Ted, Fred, and Jed are roughly the same age (30's) and live on the same suburban street, in near identical cookie cutter suburban family homes. Kids the same age, very similar family take home incomes. All are boring, rolling 5yr fixed over 25yr amortizations.
Ted bought his house in Jan of 2017 for $275k, renewed in Jan of 22
Fred bought his house in June of 2019 for $370k, renewed in June of 24
Jed bought his house in Dec of 2021 for $583k, renewal upcoming
Based posted non-high ratio rates available to them, for the last several years, their mortgages were:
Ted is still ~$970/month $11,640 per year
Fred was at $1320 month $15,840 per year until his renewal, then jumped to $1570 month $18,840 per year
Jed is at $2052 month $24,624 per year, staring down the barrel of a ~2300 month renewal at the end of the year
Ted's family can live a very different life than Jed's. Unless Jed is has buddha level self actualization that's going to weigh on him and influence his world view.
Then throw in his coworker Steve who makes the same money but is a few years older and bought in 13. Has Ted's mortgage payments and discretional spending level, but parlayed his equity into a much nicer house in 2018, a house that is now firmly out of reach for all of Ted, Fred, and Jed.