Author Chuck Klosterman said: “The simple truth is that we are all already more or less cyborgs. Our mouths are full of silver. Our short-sighted pupils are repaired with surgical lasers. Let's fill diabetics with delicious insulin. Nearly 40% of Americans now have prosthetic limbs. Let's see that we have no qualms about making postpartum improvements to our feeble selves. Why do we feel so uncomfortable about pre-birth enhancement?” Despite Klosterman's careful observation, there are reasons why people are resistant to prenatal enhancement. Unfair practices such as genetic engineering could lead to a feeling of degradation in a child and, presumably, end up in a dystopian society, almost like the society Adolf Hitler had in mind. In the minds of some scientists, genetic engineering for prenatal enhancement represents a potential disaster. Controversies over the definition of humanity, a threat to freedom of action, and eugenics call into question the moral ethics of genetic engineering, but there is still a belief that prenatal improvement will benefit society. Humanity is expressed by distinct attributes that characterize human beings. Being able to think, imagine, reason, laugh, play and feel worry are just some of these characteristics. It means being different and unlike anyone else. Practicing genetic engineering would destroy all this. We should not be allowed to question the concept of what it means to be human. If diversity is lost with the introduction of genetic engineering and "custom-made children", humanity is also lost. No one will be individual and unique if everyone can choose to have the same traits. Humanity will be lost due to unethical and immoral practices such as genetic engineering. The threat to humans' freedom of action could be caused by genetic engineering... center of paper... a reminder of why it is dangerous to give human power over trait selection essentially saying that anyone who doesn't fit a preconceived mold should be is expendable . To quote Mark S. Frankel, “A preoccupation with genetic improvement can place too much emphasis on genes and ultimately prevent us from solving problems that are truly rooted in the structure of our society.” Frankel is simply saying that problems thought to arise from “bad” genes are actually caused by mistakes humans make. Trying to solve these problems by modifying human genes will only make the problems worse. Unethical practices should be considered and observed before anything is actually done. Genetic engineering is being questioned through arguments about humanity, free agency and eugenics and will hopefully one day stop all considerations of prenatal modification.