Ahh, so many we can list that we feel we could do without! haha.
Too busy cleaning up animal poop.
Because he knew somewhere down the line somebody would come along that he didn't like and wanted the last word in even though he wasn't around anymore.
to get revenge on the future populace who still think he is a nutter....
Just like alll animals, birds, reptiles, etc. were directed by God to follow Noah, they were also told to follow the rules and behave while in the ARK. After that, they could behave like the animals, etc. that they are. Including the pest. It was survival for the chosen ones and the rest became hybrids after the flood.