OK, I still must be at least a tiny little bit sick, because my brain just stopped dead to consider how funny the word "Peeve" looked, and wonder if it was somehow etymologically related to "reeve", and now I'm trying to remember what the heck a "reeve" actually is, but I'm too lazy to wiki it...
Anyhow, my pet irritation of the day: Science-fiction authors who insist they aren't science-fiction authors. Of course, the grand champion of them all is Kurt Vonnegut, but there are a few others (Margaret Atwood comes to mind, and even Harlan Ellison preferred to be called an author of "speculative fiction".) But let's face it, Vonnegut provides the perfect example of the author who says, "No, no, my work isn't science fiction. My work is literature."
Kurt Vonnegut's work has time travel, dystopian governments, spaceships, and ray-guns. While science fiction is a hard-to-define, mutable genre label, I think it's pretty safe to say that once you have aliens from Mars invading Earth in their rocket ships, you have written some science fiction. There are really only two reasons you would say anything else, and neither reflects well upon the author.
Reason Number One: "My stories just use the trappings of science fiction to tell deep, meaningful stories about the human condition. They aren't really sci-fi." (This is the one they usually say out loud.) Of course, the big problem with this statement is that everyone writing in the science fiction genre can say it. Nobody actually writes about rocket ships and ray-guns because they really believe them to be up-and-coming future developments in the field of transportation and weaponry, and want to describe them in detail. They use them because science fiction is a genre that speaks in the language of allegory far more potently than any real-world story ever could, and so can describe its symbolism in larger-than-life terms. So to say that your work is different from science fiction because it's intelligent and allegorical is both ignorant and arrogant. It betrays your lack of knowledge of other intelligent writers in the genre, and places you on a self-constructed pedestal; you're so much better than other sci-fi writers that you don't even think you should be in the same genre as them. (Presumably the next step would be to claim that you don't write books, you construct memetic paradigms or somesuch.)
Reason Number Two: "Science fiction isn't taken seriously as literature, and if I admit that I write sci-fi, all of the literary critics will dismiss me as trash and I will lose all of my intellectual cachet." (This is the one they really mean when they give Reason Number One.) This is actually something of a self-fulfilling prophecy. Since all of the great science fiction writers take pains to explain how their science fiction novels aren't really science fiction, it makes it hard for fans to convince people that sci-fi is a genre capable of producing respectable literature. If some of the "literary" sci-fi writers would use their intellectual credibility to argue for the credibility of science fiction as a genre, it might change some opinions...but unfortunately, they take the path of least resistance, preferring to escape the sci-fi ghetto instead of opening it up and bringing people in. So we're in the circumstance we're in today, where twenty-nine of the top thirty box office films of all time are sci-fi or fantasy movies, but people still say that science fiction is a niche genre.
Which is why this remains such a pet peeve of mine...ah. Back-formation of "peevish", as opposed to "reeve", which was a sort of medieval superintendant. So no, not related at all. I hope this has given you some closure.