'Types' of couples making the decision to have children or not

Here is a short article with one journalists perspectives on how people make the decision to have children or not.

http://www.clevelandbanner.com/index.cfm?event=news.view&id=9F98E468-19B9-E2E2-67BE1D3D1E2BC6AC

Interesting how he divides the couples into different types - I think I would add a few more to the list and I'm not sure about all of the types he describes.