I also think that the law is hypocritical when it comes to its handling of child murderers.
Finally, I notice that when an underage boy violently rapes and adult woman, suddenly he's posseses the capacity to decide for himself again. I find it odd that a child is considered capable of thinking for himself to the same extent as an adult when it comes to killing or raping someone but not when it comes to having sex with someone.
If a 17 year old boy has sex with a 17 year old girl, its ok. If the 17 year old girl turns eighteen before he does, she's suddenly raping him. If he hits her though, then he's raping her.
I just find it a little arbitrary. I also don't like the unintended aspersions cast on God and our grandfathers. Many mothers in history, including the Virgin, were under 18.