Something never depreciating against its value is simply bad economics. Things will always appreciate and depreciate. I don’t know who promised you this, but it sounds like you got sold a bridge in Brooklyn.
Given that, there are plenty of other ways to save, pass on an inheritance, etc. You don’t need to hoard land so that I can’t live anywhere.
I don’t really care about your 30 year mortgage, respectfully. I probably wasn’t born when you signed it - why do you get to fuck me out of having affordable housing when I wasn’t even born yet to have that fight with you?