A plethora of people are nurtured to be decent, decorous, courteous, elegant, rational and imperturbable. Integrity and probity are in accordance with long accepted ethos and fundamental virtues of an individual.
But there are times when you encounter someone of poor nurture, who evinces a combination of vanity and hidden selfcontempt.
As the old saying goes, a tussle with a pig makes U muddy.
So just neglect those who are bad nurtured.