With IVF, the surrogate mother need not have any direct physical contact with the prospective father. Yet although this might appear more in keeping with "human dignity" and "moral values," it is precisely this artificial approach of "only wanting a child and not wanting sex," which many people find suspect about the whole procedure.
試管嬰兒技術讓代理孕母無須與委託人做身體上的直接接觸，然而這種「只要小孩不要性」、似更合乎「人性」、「道德規範」的人工方式，也正是許多人的疑慮所在。