(My headcannons explain on how babies/children work in Devildom and Celestial realm for my AU)
•Both Demon and Angel can either be created or reproduce through regular means.
•Both species having long life spans and incredible power but have incredibly low fertility.
•many pairings may try for centuries and still have very little success.
•you may think angels don’t have pairings at all but they do. The celestial realm doesn’t do marriages instead they do “soulmates” which is seen as far more deeper of a bond than marriage.
•typically, romantic relationships in the celestial realm are seen as either for the lower ranks or for those who use to be human as the high ranks are too busying serving the realm and their lord God.
•Demons on the other hand are far more free and open minded to things like one night stands, open relationships, courtship, marriages, and etc.
•Since demons live in such a dangerous climate, they often try harder for kids to make up for deaths.
•Many Demons or Angels might be tempted to pair with a human as humans are far more successful then them when it comes to making kids, but hybrids are frowned upon by both cultures for a variety of reasons.
•Hybrids are said to be at a risk of health complications, weakness, deformities, and even severe discrimination.
•As for how true the negative rumors are about hybrids is something that has been debated by both sides for centuries.
•because of low fertility rates, children are a group who are deeply cherished by both cultures.
•Both angels and demons have different ideas to raise their younglings but they can both agree that their children deserve autonomy and basic respect.
•Hitting/beating children is seen as very taboo on both sides.
•Both demons and angels would see how a lot of human children are raised and treated to be very bizarre.
•As children age their age begins to slow down until they reach adulthood and their aging is stunted.
•Because of the lack of children it’s not uncommon for parents to agree to share the parenting with very close friends or relatives so they can share the joy of raising a child.
•Angels in particular are very communal when it comes to raising their young. It seen as part of the community’s job to help care for young and to make sure they will have a place within the community once they reach full maturity.
(Lookin at look Luke with his 4-6 dads)
•It’s very common for angels who were created to be raised by their other siblings who were also created not born.
(Idk might make a part 2 if I come up with more ideas)