It was guaranteed to be a stomach-filling meal, coupled with a good night's sleep without fear during the nighttime.
Filling one's stomach in the Lucky Ship required self-effort, while a safe place to sleep could be provided by the Lucky Ship.
He prohibited the use of force in the Lucky Ship, which meant he didn't want to deal with troubles stirred up over women. At the same time, in dire situations, women could survive by utilizing their bodies, while men who wanted to interact with women needed to have supplies, and to get supplies, they had to venture out.
He knew that this apocalypse would last for a very long time; hence, gradually, this operational model would deeply ingrain itself in every survivor's heart, to the extent that eventually, they'd get used to scavenging for resources and returning to the shelter to enjoy life.