"Do we all secretly want the world to end?"

Short answer to a long question; yes.

See below.

See also Salon.com for "Do we all secretly want the world to end?"
[But why would anyone enjoy kindling this fearful response? Lissek suspects that some apocalyptic believers find the idea that the end is nigh to be validating. Individuals with a history of traumatic experiences, for example, may be fatalistic. For these people, finding a group of like-minded fatalists is reassuring. There may also be comfort in being able to attribute doom to some larger cosmic order—such as an ancient Mayan prophecy. This kind of mythology removes any sense of individual responsibility.

There’s an even broader allure to knowing the precise end date. “Apocalyptic beliefs make existential threats—the fear of our mortality—predictable,” Lissek says. Lissek, in collaboration with National Institute of Mental Health neuroscientist Christian Grillon and colleagues, has found that when an unpleasant or painful experience, such as an electric shock, is predictable, we relax. The anxiety produced by uncertainty is gone. Knowing when the end will come doesn’t appeal equally to everyone, of course—but for many of us it’s paradoxically a reason to stop worrying.]