re this one. who can declare his/her gene is perfect. might have a high cancer tendency, might not be good looking, IQ might not above 130...

Well, when I was very young, my father once told me a treatment can give 5 more years to his patient, I asked why do they even want to do it just for 5 years? Since 5 years is nothing. My father said life is like that, even a healthy person can have a car accident in 5 years, so people don't have to live at all?

So how about baby blues, depression, environmental factors also contributes. So people are regarded as bad gene as well? Well, for a high tendency, people should be careful, but world is not black and white, too many factors.