Hi again Seven,
Considering that about 0.25% of the U.S. population is incarcerated for violent crime (http://www.ojp.usdoj.gov/bjs/glance.htm), reflect for a moment on what percentage of the birth rate may represent the offspring of convicted violent criminals or ex-convicts. I would make a reasonable wager that the percentage is disproportionally high.
Now consider that so many sexually violent crimes go unreported (5 % on college campuses in one study --- http://www.aaets.org/arts/art13.htm ), and even more seldom prosecuted...
...do we want to accumulate in our society (one big gene pool) people (or genes) predisposed to violent tendencies?
The violent nature of our society will get worse if the violent people are the ones reproducing.
cellomould