Question of: Those that can should.

I am not sure this is a good supposition as it pertains almost inevitably torwards ambition.  Being that ability should be used to the greatest measure is really a cultural construct of western individualism.  It also takes the idea of adulthood, perhaps in more extreme dirrections.  Then with great ambition comes that ego, that power hungry potential.  In response or reaction the issues of basic humanity are not surpassed, but more like are agents of dehumanization and ranking.