The national fertility statistics have found that 2 out of 10 couples have difficulty procreating by natural means. Only 20 years ago this ratio was half. The problem is both due to the male as well as the female. Males are no longer as fertile as before, since their sperm production has reduced by half in the last half century. And then there is the age factor. Over the age of 35 for women and 50 for men the ability to procreate is reduced considerably.
In Italian, motherhood over 40 have doubled, passing from 3.1% to 6.2% and the average age of childbirth has risen to the age of 32. The highest in Europe, after Spain and Ireland.
Cancer is also a cause of infertility. Today more and more one heals from cancer, but after chemo has wiped out the possibility of procreation. It would be just enough to resort to the cryopreservation of eggs and sperm at the time of diagnosis. The same thing can be done on a large scale before the age of 38 with healthy women who have not yet found the love of their life or they do not feel ready for a pregnancy.
The cryopreservation or vitrification of young ova allow for successful pregnancies ata later date even if one has moved forward with their age.