The Razor's Edge by phantisma

The Razor's Edge - phantisma

As a result of a 2/3 drop in fertility, seventeen year old Jared has been turned against his will into a male breeder. The story starts five years later as Jared enters the government facility where he will be artificially inseminated for his first pregnancy. He finds a friend in fellow breeder Jensen.

Some great world building in this fic although given that one third of all women are still fertile, I was unsure why the experiment was necessary?