LOL! You've obviously never worked in a nursery. Never yet had to teach a child to be bad, plenty of times had to tell them no and teach them to be good and not bite another child or steal another child's toy!
Do you know what an infant is? Do they sin?
An infant who is born and dies one minute later, has this child committed an actual sin?
Please explain Genesis 3:15. Who is “the woman” what is the enmities that protect her seen (Jesus Christ) from Satan (note: the enmities are the SAME) and why is the woman crushing Satan’s head?