Brother of a friend recently got into the furnace/HVAC business. Said they told him that they don't build furnaces like they used to as they lasted too long and not enough repeat customers. Now they build them to fail once the warranty runs out.
YMMV
Sounds like a conspiracy theory to me.
Until you start replacing hot water tanks every 6 years and 2 months...or your furnace bites it 8 yrs in. Time will tell. Maybe it should be treated like a lease, you move in, keep up with the maintenance and repairs, then sell and buy a newer house before
goes south. Next person moves in and starts the whole cycle again, not knowing it was just done, 6 years ago.