We are living in the middle of a sexual revolution. Not unlike Ancient Rome.
It was a culture that was very pornographic, and pedophilia was very much a common practice that was commonplace for adult entertainment. The purpose of a woman [wife] was to bear children and continue the legacy of the family, but the sexual entertainment came from whores and children.
Roman religion wasnt so much focused on ethical right and wrong as we understand it today by a heavially Christianised civilization. Instead, Roman pantheism focused on Power, Fertility, and pleasure. This was the function of the gods and our human sacrifice needed to reflect those values.
Even in that culture there was no basis to say that pedophilia was "wrong" or "right" it simply was...a fact of life. Yet another pleasure to indulge in.
To bring this full circle, specifically American culture. We are in the midst of a sexual revolution. As we move into the Post-Christian era, I see that we are replacing the foundation of morality from judeo-christian values, to more of a post-modern value system which asserts
"Everybody has their own truth" In other words, no absolutes.
Mr. Dawkins comments in a way are very progressive and give a clue to what we will be experiencing in the next 10-20 years. I think pedophilia will be considered just another sexual orientation. Actually they already have a word for it.."Inter-generational love"
By the way, by no means do I agree with Richard Dawkins, and as much as I cringe at the possibility of this happening, I have no doubt that in another 10 years, my moral objection to this practice will be considered bigoted.