You make good points but is it moral to engineer people, not for life threatening issues such as cancer, but simply to for monetary or military gain, such as sleeping less? Is it moral to engineer people before they are born, without their consent?

What happens to those who choose or whose parents choose not to have them engineered? If they need a full 8 hours of sleep how can they be competitive?

In one of my earlier posts I linked to an old Twilight Zone where everyone had the opportunity to choose how they will look when they reach 18. One girl does not want to look like every other woman and refuses the procedure. They pressure her and finally do it against her will. In the end, she is so happy with her perfect appearance. Is this what we want and is it moral?

Life threatening genetic alteration aside, I think we would be heading down a very bleak road if we altered people just so they could work longer hours or carry heavier loads.