This is a succinct way to put it, and a good list. Can you say more about "social pressure against out-of-wedlock births"? You see this as another thing that encourages unsustainable lifestyles?
There's divorce, and then there's divorce.
No kids, not much of a problem. Economically, they're better off together, but ....
Unwed parents are a disaster for both society and the kid(s). It's pretty much a guarantee of long-term poverty.
Having kids is almost always a choice, a choice that has huge consequences.
on what basis?
My partner and I had our 3 children out of wedlock. Who are you to say that unwed parents is a lock-in to food stamps and crime?
Next you'll be blaming unwed parents for the break down of the fabric of society.
You are way out of line.
Some states call it common law marriage, but even if they don't you are still effectively married.
Marriage is not a piece of paper, marriage is a family structure.
That's how the statistics work out. We can argue about why that happens, but it's absurd to suggest that it doesn't.
Parents' choices, and having kids is almost always a choice, have consequences.