That millennia long track record contains very high numbers of infant death, and the only thing pushing those numbers down is our ever-expanding collective knowledge of best practices regarding child-rearing.
Women aren't born with innate genetic knowledge of how to prevent SIDS, it's taken generations of studies to figure out causes and develop working practices to counter it.
I you put a baby in safe environment and you don't touch it, don't play with it he widdle and die. Think about that for a moment. One thing for sure we were able to reproduce for millennia but let science do it for a while and see what happen.
Women aren't born with innate genetic knowledge of how to prevent SIDS, it's taken generations of studies to figure out causes and develop working practices to counter it.