I second Roger's endorsement of your post, and I would like to add that I believe you are completely innocent for not finding a way out and for not being able to tell anyone for a very long time. So often, children just don't have the vocabulary and the mental constructs available to them to even express what happened to them, especially something as horrifying and devastating as rape. That was true of both of us, and of tens of thousands of other male survivors out there when we were young.
Nor are you guilty for wanting God to deal harshly with the rapist; rest assured that God WILL indeed deal harshly, and justly, with that criminal. Please don't be too hard on yourself! It is entirely natural, and godly, to long for justice. God (and you) already gave the abuser plenty enough of grace by allowing him to live some time after the abuse took place, and if the perpetrator did not use that time to take the opportunity repent and to make restitution to you, then his current damnation is all the more just for that.
And as for your adult years, you have become a very brave and kind man who is very much eager to help others. Therefore, now it is time for us, many of whom you have blessed and encourage, to be there for you in the hour of your sorrow as the letter from the police brings back old pain. Your biological family indeed was not there for you, but we, your brothers in Christ, your spiritual family, are here for you now.
I love you ADen, and I pray for you every day! You are infinitely valuable, and you mean so much to us, who have benefited from your encouragement, love and kindness! I thank God for you, and in doing that I'd like to dedicate this song to you: http://www.youtube.com/watch?v=1J0O8wTzvIc
May you be blessed with all the indescribable riches of God's grace,