If only Noah, the Godly man didnt get drunk would the world be spared of some of the problems ?

God saved Noah and his family along with the animals and birds to repopulate the earth after pouring down His wrath on the rest of the world.Soon as he finished the God given ignment,the Godly man promptly got drunk and was lying down exposing himself. one of the unfortunate son had to see it, while others went and covered him walking backwards.On account of this the descendants of the chap who saw the daddy's nudity(Canaanites )had to be cursed and other brother,s descendants had to wage a war for ever and annihilate them .If only Noah didn't get drunk or at least knew what forgiveness means then(World had to wait till Jesus, Son of God came to tell about forgiveness), this fighting brother against brother just to fulfill the Scriptural curse may not have started and continue till this day.