
Quoting
aardvarc
Anthropologocially, this is why human relationships have evolved to have period of courtship for the couple to determine that they are compatible to raise a family together, and the institution of marriage, as a legal contract binding the two together to do so. Those are the principles upon which a majority of societies base their family law. (Of course there are noteable exceptions, bearing in mind that societies with exceptions also have much more stringent rules and mandates). Operating outside of those principles causes problems for a reason; because the law presumes that it is in the best interest of society at large, and children in particular, that the family structure is a healthy and stable one, meaning that it doesn't want there to be children with one parent (it wants TWO), paternity questions (it wants children to be the product of marriage), and many of the other issues that complicate matters when people with no intent to follow that social structure bump uglies in the night to create children outside of a long term relationship supporting the rearing of resulting children, and providing legal protections for those children.
It's only been the last handful of decades that a pregnancy in an unwed couple didn't typically resolve into a marriage - either due to family pressure, societal pressure, religious pressure, financial pressure, and internal pressures for the individual parents.
Bookmarks