Sigh... you are merely spinning in circles.
In 1986 scientists from around the world got together and shared psychological and biological evidence until they came to the conclusion that 'human nature' is no excuse for violent behavior. The findings that were released came to be known as “The Seville Statement”
. This statement made 5 propositions, which are:
1. "It is scientifically incorrect to say that we have inherited a tendency to make war from our animal ancestors."
2. "It is scientifically incorrect to say that war or any other violent behavior is genetically programmed into our 'human nature'."
3. "It is scientifically incorrect to say that in the course of human evolution there has been a selection for aggressive behavior more than for other kinds of behavior."
4. "It is scientifically incorrect to say that humans have a 'violent brain'."
5. "It is scientifically incorrect to say that war is caused by 'instinct' or any single motivation."
As I said... blaming 'bad behavior' on genetics or 'human nature' is nothing more than a cop-out.
It may seem like 'human nature' because such behavior became 'standardized' in the developed world (and children [even infants] are exposed to it which influences them on a subconscious level) and was passed down as such to new generations (not via genetics) through exposure - but that doesn't mean its 'accurate' to say that its 'human nature'.
Standardized behavior due to past environmental impact and 0 social progress (that does't take into account technological progression) while perpetuating highly abberent behavior due to the socio-economic system in place is NOT 'human nature' - its merely human behavior that was created due to environmental conditions of the past, which some humans took to exploit under the monetary system so it would benefit them (and are now in power and have kept majority of the planet in a state of perpetual ignorance - relying on passed down traditions and biased opinions - as opposed to the scientific method [which incidentally shots over 90% of culturally established 'norms' into dust]).
As for your statement that some of the highly educated people are most competitive:
They live in an environment that FORCES them to be competitive in the first place (capitalism) - and just because they received 'high education' doesn't mean they received 'RELEVANT general education' (there is a difference).
Change the environment and you can change human behavior.
Ever wondered why small-time felons who basically had next to 0 affinity for violence (or even wrongly accused) and were not a threat to anyone and became extremely dangerous to society after spending time in a prison?
Behavioral alterations due to their prolonged stay in a very damaging environment (prison).
My... we have direct observations based on the scientific method that environment can/does change individuals and their behavior (for better or worse) and others still continue to perpetuate myths such as 'human nature' which have been passed down for generations.