And how many fights did Noah's son's and their wives have on the ark? And how many fights did Noah have with his sons and how many fights did Noah's wife have with her daughters-in-law? The possible combinations of bust-ups are endless! At the end of 40 days and 40 nights of 8 people being holed up together in a confined, very smelly space (due to all those animals and Outlaw's bowls of beans diet) will have resulted in them being a teensy bit snippy with each other, I should think.
Oh and it rained all the time! Nothing like it raining all the time to put you in a bad mood. How did any of them stop themselves from murdering each other?!