The difference with a single player game is that in the same way you lose yourself in a good novel, you can lose yourself in a single player story. You see it in all these games, where you can fill your house with turnips or decorate your armor with a dragon skull. It lets you go inside for a little while and, well, not hermit up necessarily, but be in another place and time for a while. It is escapism and you can’t really have that when ‘BonerLord247’ goes running past you in the middle of a raid.