Pakistan carries legacy of Indus valley civilization. The people are civilized and you can see in the culture. We regard our guests; and not so quite friendly with people who come with malintent. History of Punjab, KPK, Balochistan is filled with such examples. 70-80 percent population of Pakistan is ethnically warrior class, for thousands of years buffered South Asia from invaders from west. And even that didn't turn the people in to savages due to strong culture; says much about Pakistanis; and this should not be mistaken as non aggression.