I was deeply concerned to read the proposal by Dr Kevin Smith last week, that young men should consider freezing their sperm, around the age of 18 with the promise of artificial fertility even in old age.
I have friends who have had babies easily and happily well into their 40s, but I also know others who are not so fortunate. And I've got friends who were unable to conceive naturally in their 20s and 30s. So what does that tell me? Quite simply, starting a family isn't plain sailing whatever your age.
For some couples who long for a baby, and for many single women and lesbian couples, donor sperm is the only way they will be able to conceive - but when they visit their local fertility clinic, they may find that they are advised to consider using sperm imported from donors in the United States or Denmark.