Your first sentence of your post is incoherent
More babies born out of wedlock due to rape and incest one and two generations ago than today?
Are you on some sort of medication ?
You are completely wrong. I don't have the statistics at hand, but rape, incest, premarital sex, bastard children, and so on are all a product of the liberal sex and drugs revolution of the 60's onward. All crime indexes follow accordingly as well.
Prior to that time, these behaviors were comparatively unheard of.
Perhaps it is the resulting fruit of the "Great Society" as well, but there is absolutely no doubt that the moral decline is the single contributing factor. Without that, you would not be paying for anyone's bastard children, nor the crime and enforcement that go with it.