Would you like the city or town where you live if you hated everyone in it, and didn't have a single friend? Conversely, if you had a wide circle of close friends, do you think you'd hate living there?
Caring about others is a World Induction Technique.
We looked at ways of making the player care about NPCs in Chapters 2.10, "NPC Rooting Interest Techniques," and 2.11, "Player Toward NPC Chemistry Techniques."
Once you employ these techniques toward an NPC or a group of NPCs, if the game prompts you to take responsibility for one or more of these NPCs for instance, because they're likable or because they've helped you in the past you'll feel more willing to involve yourself in the world of the game.
The same thing goes if you're part of a group of NPCs (such as a squad) and Group Bonding Techniques (see Chapter 2.14) are artfully used. If you feel part of a group, you'll also like the world of the game.