Here is the really bad, unexpected news. Sperm quality in the West is crashing, but Australian sperm are some of the worse in the West, the lazy sods. Here is the scientific paper for our scientifically savvy readers: https://academic.oup.com/humupd/article/doi/10.1093/humupd/dmx022/4035689/Temporal-trends-in-sperm-count-a-systematic-review.
And, here is the alarmist article for people more like me, who like a good apocalyptic scare, to get the animal spirits running: http://www.bbc.com/news/health-40719743
Seriously, though, the halving of sperm counts in only 40 years, means that if such a trend continues, the West will be infertile, maybe even with assisted technology. But, what about other cultures and races? Well, the story is grim there too:
http://www.haaretz.com/study-quality-of-israeli-sperm-down-40-in-past-decade-1.275772
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3443022/
http://articles.latimes.com/2012/aug/15/world/la-fg-israel-sperm-20120816
http://www.huffingtonpost.com/2013/11/07/china-pollution-sperm-count_n_4233231.html
https://link.springer.com/article/10.1111/j.1447-0578.2007.00184.x
I can continue adding articles, but I hope the reader sees that there is a major problem here. Across the world, human sperm counts are crashing, and the longer-term consequence of this is extinction, maybe. There will still be a few males left with high sperm counts. Certainly there is at least one movie script here, but probably not suitable for a Christian audience, as most movies today are not.