Many people, including a number of scientists, feel that the exploitation of human stem cells ​ — particularly those derived from either embryos or fetuses — ​ shows a disregard for the sanctity of human life.
Paljud inimesed, nende hulgas arvukalt teadlasi, on arvamusel, et kasutades inimese tüvirakke – eriti just neid, mis on saadud loodetest –, näidatakse üles lugupidamatust inimelu pühaduse vastu.