sdads

500 people will make a large amount of Soylent Green

I thought it was only for children, to save humanity for the next generation, etc.

Who’s gonna raise the children?

Found on wiki: A large percentage of the shelter population is expected to be children, as the primary purpose of the shelter is to serve as an "underground orphanage, a place where a new generation could be saved from nuclear apocalypse", which, according to Beach, would otherwise wipe out over 80% of the world's population.[4] "We're going to say to people: 'Well, we have room for your children, but we don't have room for you.' That's the nature of life... this is the lifeboat."

Oh and about the food/length of stay question @creativedragonbaby (also found on wiki): "the shelter was designed to accommodate as many as five hundred people[4] for the length of time required to allow the widespread nuclear fallout to decay to a level allowing a safe return to the surface after a cataclysmic nuclear event."

So he expects to just have a bunch of children locked up alone with him to do with as he pleases? That's not creepy even a little

I do not know who the "we" is. I would assume there would be some adults to keep everything running.