Unless the mother and father are in a abusive situation, it's foul. The father has the right to see his baby being born, plus a woman is usually so focus on giving birth she's not thinking about being pissed.
Free daycare with someone you know and trust vs. daycare that I'm a have to pay for with someone I might not know so well.
My son stayed with my grandma until he was 3. If this is a viable option for you and your wife, do it.
As far as a preschool, making sure the place is actually teaching the kids something and not just being over priced baby sitters. Also check what kind of credentials they require their employees to have. A lot of places just require a short month long certificate anybody can get...