None of the above removes the biological need. Both Soylent and blow-up dolls satisfy the biological need.
Do note that humans have the biological need to have sex, not to impregnate (or be impregnated). Otherwise birth control would be a non-starter.
Do note that humans have the biological need to have sex, not to impregnate (or be impregnated).
IIRC, stereotype has it that some childless women above a certain age do have such a biological need, popularly known as "hearing one's biological clock ticking" or something like that.
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