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Sounds easier to make a human shaped robot than to make something else than can climb stairs as well as do everything else needed efficiently.
Maybe a different shape would be fine if they never needed to climb stairs or go up and down curbs, like rolling around everywhere, which we already see in some restaurants with the little programmable serving robots.
I pay most of my bills with my end of the month paycheck and the middle of the month paycheck is for necessities/savings/fun stuff. Mostly necessities/savings though.