I mean if you really think about it when you lived in a world full of Factory smog to the point where you don't even see the sun, and you have to put on bodysuit just to walk outside to protect you from the toxic a even though there's still a good chance you might die and you have a horrible working hour to the point that even your online friend has a horrible working health and your mom died when you were small because she died due to overworking as well exhaustion of trying to make your favorite food when she was in the kitchen I can see myself definitely locking myself outside of the world into sticking to playing video game.
Pretty much the author makes the world so horrible to the point where ainz literally has no reason to come back to the real world but he does want to bring all of his friends there with him.