I agree that ethics are important here. I had to be 100% truthful on my application, and expect my competition to do the same, whether thats for medical school admissions, residency, etc.
However, I was mostly slamming the scum bags I knew that lied on their application, were constant cheaters, and were overall terrible people that managed to get into medical school. They didn't feel bad about it all, and still don't.
Ok, lets go physiological for a second.
Psychopaths (genetic) and sociopaths (environment) with a type A personality that allows them to be CEO's, Doctors, Lawyers, etc. don't have some of the natural anxiety issues we face. When they are stressed, their emotions can go unchanged.
This allows many scumbags to lie on their application, and then not feel bad about, and then not stress over it during their 4 years in medical school.