Challenging assumptions - are you obligated to have children?

Here is a short blog post looking at the issue of the 'cultural obligation' around having children.  It's quite short but it has some excellent links to research into attitudes around having children and remaining childfree. 

http://m.pittnews.com/opinions/article_bb0cd566-dcbb-11e4-9025-6f11cb4df8b1.html?mode=jqm