That's funny seems to me that without them we would have a LOT of homeless people. They have an asset and allow others to use it for a fee.... banks do the same thing, they have liquid capital they offer to others for a fee... would you say that banks as a rule are completely worthless?
If we are talking about a fantasy utopia where 250-300 families who don't know each other are all going to gather together and put funds together to build an apartment complex in a major city and run it like a co-op then continue to live in fantasy land because that rarely if ever is the case.