 How would jealously possibly factor into the issue of cloning?
Cloning humans is taken to be either 1) a fundamentally evil thing that must be stopped or, at the very least, 2) a complex ethical issue that needs legislation and regulation. Even if people have the right to do it, is cloning a good idea? Besides, such a trend would correct itself in a generation or two, because celebrity is closely linked to rarity. Scientific studies on such twins--reared together or apart--show that they share many characteristics. Just how many they share is a contentious topic in human biology. Despite how many or how few individual characteristics twins--or other clones--have in common, they are different people in the most fundamental sense .
 People would be "losing" a sexual advantage in not being able to reproduce a clone directly themselves.
 Clones would be genetically superior, as they'd be able to choose what traits to pass down.  People may envy the social recognition that clones would receive. They'd be missing out on the same popularity.  Clones get in between people and their spouses. They're too separate and impersonal.  People would be "losing" a sexual advantage in not being able to reproduce a clone directly themselves.