Bluebrian why do you feel sorry for people of 60+ who are paying into a mortgage?
That's me. I enjoy my job, have no intention of retiring for several years, and our mortgage is a lot less than it would cost to rent an equivalent house - very affordable.
If/when we do come to sell our house - it's a 5 bed so too big now the DCs have left home really, we will release loads of equity. It's no different to paying into some kind of pension or savings pot.