A society without cash is a society in which every person has no choice but to get the permission of someone they don’t know and will never meet each and every time they seek to obtain food, water, shelter, or transportation, and that permission can be revoked instantly, silently, and invisibly at any time.
That's how services work though, you can't really be self sufficient unless you're a hunter gatherer. And even then you still need to be strong enough to kill the other tribes who are contesting with you for land. Imagine going to Mars and the very air you breathe is owned by your government. For me that's not an argument against going to mars, that's an argument for working harder to build a stronger, more trustwort…
Don't worry, it'll be owned by Elon Musk.