The limitations of fertility can be heartbreaking for those who do know they want to have children.  In this story, a young couple talk about their experience of fertility treatment.

 http://www.theguardian.com/lifeandstyle/2015/jun/06/young-infertile-four-years-forty-negative-tests-ivf

I often get clients who come because are trying to make the decision whether the want to have children enough to go through all the difficulties of fertility treatment.