If you know how to make people that happy, you know how to make them miserable as shit. Whatever this island world could be, take it away. If they want nature, make them look at screens. If they like quiet, make the world noisy. If they want community, split them up. If they want time to think, interrupt them all the fucking time. If they want real human companionship, tempt them with artificial matchbox-and-bead FantailPals.