Mark Z. Danielewski said this quote

What is boredom? Endless repetitions, like, for example, Navidson’s corridors and rooms, which are consistently devoid of any Myst-like discoveries thus causing us to lose interest. What then makes anything exciting? Or better yet: what is exciting? While the degree varies, we are always excited by anything that engages us, influences us or more simply involves us. In those endlessly repetitive hallways and stairs, there is nothing for us to connect with. That permanently foreign place does not excite us. It bores us. And that is that, except for the fact that there is no such thing as boredom. Boredom is really a psychic defense protecting us from ourselves, from complete paralysis, by repressing, among other things, the meaning of that place, which in this case is and always has been horror.