In fact, it's renting that allowed us to upgrade our place when we had the opportunity, as we didn't need to sell our place in order to be able to buy a new one - we just moved our stuff over.
And to your point:
> It converts your wealth into a usable asset (a house). You can't build a shelter out of bricks of cash, or convert a money market account to a nursery.
You absolutely can do that - it's called "Renting" or "airbnb" or "subletting". The challenge is turning a usable asset back into a pile of cash if macroeconomic forces play against you.
It does not have to be this way. My apartment is owned by a housing cooperative, and every renter is also a member of the cooperative. The cooperative is required to act in the best interest of all its renters, so while apartments are being redeveloped all the time (e.g. adding lifts to existing apartment blocks), rents are remarkably stable. And the cooperative literally cannot terminate my lease. Unless I misbehave, only I can terminate the contract.
(This is in East Germany. A lot of apartment blocks constructed in the GDR era are now owned by cooperatives like described above.)
If you are are renting, then you are paying significantly less than a morgage.
If you don't have a morgage, you can put a bunch of extra cash into investments that make more money than housing "investment".
And once that stock market investment increases, you can spend all that extra money you got on anything you want. You could even use it to buy a house! Probably even a bigger or more valuable house than if you "invested" in a morgage years ago.
4% rule?
Kids, spouses, and most people with friends, don't care to be constantly uprooted or at the mercy of a landlord who is likely to raise prices every year. Renting results in no value - it's a direct cost for never any gain. Even buying a house in a declining market will net you less loss then pure renting.
Does it tie up your wealth? No. It converts your wealth into a usable asset (a house). You can't build a shelter out of bricks of cash, or convert a money market account to a nursery.