When this country was first established, the founders stated that it was being established on the principal that all men are created equal, and have an equal right to life, liberty, and opportunity. And yet those same men owned slaves, and believed that men of color and women were not the equal of themselves.
My point is that as a nation we are a work in progress. The founders got the ideals right, but they were unable to live up to them. And so were the rest of is. But slowly, and steadily, over the years, we have been progressing toward those ideals. We have come to see women as the equal of men. And then people of color, and just recently, homosexuals. But we still have a long way to go in actually practicing those ideals that we founded this nation to embody.
I believe that allowing the sexual use/abuse of human beings for money would be a big step in the wrong direction. It would lead us away from the ideal of respecting all our fellow humans as we would respect ourselves, and move us toward the ideal that money is more important than respect, or dignity, or equality. It would allow that the exploitation of others is acceptable so long as the money's good enough. And that's not the way we want to go.