If that's slick, then reality is slick. I think age of consent ought to be set at puberty, which is where it's been for most of American history. The real question is this - why do you hate the Bible? Do you think self-proclaimed 19th century reformers trump the revealed truth of the Bible? Or are they simply false latter-day prophets claiming a higher truth other than what was revealed to the prophets in the Bible? What are you - a Mormon?
Lets just be blunt about it. You obviously want to be able to screw children as young as thirteen years old. Any justification you try to come up with will ring hollow in the face of that putrid truth.