Well, Colorado does have capital punishment... so one has to wonder.
Now, not to diminsh what he apparently did, but there are exceptions or circumstances in some cases that, while the person is guilty in the strictest letter of the law, make the case a little hinky. And remember, in virtually every state, a "child" is defined as anyone under the legal age of consent... including a girl one day shy of being 18. So let's not be too quick to judge.
Anyhow, I'll give you a perfect example: A guy with whom I went to grade school was out at the bar one Friday night. This is a local nightclub that demands ID at the door, and no one under 21 is allowed in after 9PM on weekends. So, he's bopping around pretty-well snockered up and he meets this gal... they start to talk. She's pretty hammered herself, and one thing leads to another. They go home together and have sex.
No big deal, right? Wrong. Turns out she's 15! That's right, the next morning she's regretful of what happened, so she goes to Mom and says this guy took advantage of her. He gets charged with Criminal Sexual Conduct, 1st degree, rape of a child (anyone under 18 at the time was considered a "child" by the law--the age of consent in WI has since been lowered to, I believe, 16). His defense? "I was in a bar. They card at the door, so anyone inside should be well over legal age." The prosecutor's rebuttal: "You should have checked; mistakes get made." When was the last time you carded a one-night stand? I never have.
He's still in prison right now on this charge. Yes, what he did was wrong but he did not knowingly make the decision. It's costing him years in prison and adds the stigma of being on the CSC offender's list for the rest of his life.
While this guy was never my friend, I still think he got a bullshit deal. I'm not saying he should have gotten off scot-free, but I think they could have worked something out a little less harsh.
Oh, and how did this pretty young thing find her way into the bar? When asked for ID, she showed the doorman her breasts... and he let her inside.