Or maybe some people figure out that with a 2.5 to 3% fixed rate loan ….

1) payments still end up being below rent even before tax benefits

And

2)instead or paying off a house early, younger people slightly more financially savvy can do better than 2.5% -3% by taking the nice low interest loan and investing whst otherwise would have been sunk into paying off a primary to generate higher return income elsewhere. Like maybe 34% last year in the stock market or 6-8% cash on cash in rentals or something else.

Afterall, its not like your primary is generating any income. I believe some folks call it being house rich but cash poor…