Children, again, as we all know, which is blantantly obvious, and proven by scientists at NASA are;
And I'd like to say "they're evil primarily because..."
But there are so many reasons that one of them standing alone would be enough to convince a jury that they are evil.
Among these are disease transmission, loss of sleep, loss of friends, you don't own your own life any more, they could be born deformed and put you in the poor house, they could grow up to become a mass murderer, the legal liability of having one, having to discipline it then getting sued because you spanked a child, bring a child into today's world is just making them slaves to social security and medicare and the rest of the social programs that go to lazy bums.
But the biggest reason is their cost.
Pure 100% extract o' evil.