Age of consent is an interesting concept. It seems to have developed fairly recently in the western world, and not at all in less developed parts of the world. Where life is easy, we have free time to come up with rules about who can do what to whom. Where life is a struggle, the practical neccessities of survival seem to preclude such ideas. Only 150 years ago here in the US (A bastion of morality, I am told) I suspect a 12 year old girl was quite marriageable. By her own (supposed) testimony, Aisha consummated her marraige to Mohammed at age 9. By ancient Talmudic law, a jewish girl could be betrothed at age 3 and was considered a virgin as long as she was no older than 9 regardless of the actual fact.
What a charmed existence we lead today, compared to those poor souls who have to fuck to survive.