During labor does every woman deliver the placenta? I ask because when I had my son, it was never mentioned and I never saw it. There was quite a bit of blood, but from all the pregnancy and labor/delivery classes I took, no one ever discussed it. Why is this not discussed more?

That is the way they do,

Because the event of delivery is the baby, parents focus on it, pay no attention to the rest after baby comes.

Yes, all do this