Abaddon

Abaddon (Neutral Evil)
If you're neutral evil you're likely extremely self-centered, and well this is the place for you. Abaddon is a wasteland, and probably the largest finite plane in existence. If you've spent your whole life seeing yourself as a god among roaches, it's not surprising that you may spend your afterlife as a literal version of that. You will likely go millenia without seeing another soul, and you'd encounter nothing larger than an ant. Souls here spend their eternity constructing magnificent citadels and towers out of the raw elements of the plane (mostly glass and obsidian), lonely tributes to the self.
The place is ruled over by the 4 horsemen from within their daemonic citadels. Abaddon was once something so much more, evidenced by the bones of world-sized creatures scattered about and the truly breathtaking majesty of the citadels. That's no say that there's nothing happening here, the citadels are full of daemons strengthening themselves and pursuing the single ideal of self above all others.
Other citadels exist as well to the other NE gods, including Hel's, built adjoining the horseman of plague.
Why would you want to go there? Finally being free of other people must be a haven to some, and the solitude and freedom to wander (avoiding meteor showers and lakes of liquid lead) is certainly refreshing. Within the citadels once can experiment and learn, perfecting oneself for all eternity. It's odd that the idea of aggressive self betterment is nearly exclusive to the LE and NE planes.