What is wrong with genetic engineering in humans?

People being scared of becoming inferior.

Explanation:

Once someone has become genectically altered they might have some advantages up on regular humans that don't want to be genetically altered. The unaltered humans would always be scared of being attacked by the altered humans. Its the superhero scenario. In comics you see some humans fear superman because he has the power to kill all of them & that leads to that one guy developing weapons (lex luthor) to try and level the playing field.