It took him forty years to build the Arc, but by the time he finished, the people were so wicked they were beyond redemption.
Nice but as I said earlier:
So there was only going to be food for the the animals and 'you' which, from V.18, means Noah and his family. No consideration was made for extra food for any who might repent.
There was never any hope for pre-flood mankind. It was a forgone conclusion that God would wipe them all out. Noah's preaching wasn't of hope - it was a judgment message.
No provision for food - meant they were always doomed.
Lovely God you worship. Getting someone to preach for no reason.