http://intellihub.com/2013/07/11/us-birthrates-plummet-by-310000-babies-responsible-economic-planning-or-shadow-depopulation/
This is a small dent in the population. Must try harder.
No, seriously. Infertility is NOT the only issue. There are many other bad health effects, so this is NOT the way to go. Granted, there is nothing I'd like better than to see the human race wiped from the planet, but I'd rather see everyone go Cather, Shaker, or other sect that isn't into breeding.
Actually, the stats are full of it. I find it hard to believe we have 7 billion on the planet, and me thinks due to what we've done; the population is already falling. Of course it is only a theory and I could be wrong, but. . .