As a child I read L’Engle’s Murry family stories (inluding A Wrinkle in Time) as well as C.S. Lewis’s The Chronicles of Narnia, although I consider both to be fantasy. A little later I read most of Edgar Allen Poe’s stories, but only a handful (e.g., “The Adventure of Hans Pfaall”) could be considered sci-fi. I also read Tolkien’s works, clearly fantasy, and Lewis’s Space Trilogy, which is sci-fi/fantasy. Perhaps the first of my favorite authors as a child was Roald Dahl, who wrote many stories with both fantasy and sci-fi elements (such as Charlie and the Great Glass Elevator, which features Willy Wonka in space!). In recent years I have read some of Dahl’s more “adult” works, and they too have both fantasy and sci-fi elements (for instance, “The Sound Machine”).
I mention these not to go into some fantasy novel tangent, but because these two genres often mix, and I am guessing by the prior posts that some people got into one genre by way of the other.
I would say that the first sci-fi novel I ever read was Bradbury’s classic (IMO) The Martian Chronicles, although Bradbury’s writing has a fantasy element to it too. I have enjoyed much of his other work, although overall I have a feeling most don’t consider him a sci-fi author.
The same thing goes for Kurt Vonnegut, whose novels Slaugherhouse 5, The Sirens of Titan, Cat’s Cradle, Slapstick, etc., had sci-fi elements, but some of his stuff, like Mother Night, didn’t.
In the meantime I was reading “classics” and finding sci-fi elements in novels like George Orwell’s 1984, Aldous Huxley’s Brave New World and Edward Bellamy’s Looking Backward (all utopia/distopia novels), as well as fantasy novels like Mark Twain’s A Connecticut Yankee in King Arthur’s Court and the Greek myths, including Edith Hamilton’s Mythology and Homer’s Odyssey.
Once again, these are interminglings of the genres, and not yet quite into the realm of “hard” sci-fi.
In recent years I have been reading more sci-fi, picking the usual suspects, such as Frank Herbert’s Dune series, Orson Scott Card’s Ender series, Isaac Asimov, Robert Heinlein and Philip K. Dick. Of these authors I find Dick (especially his novel Ubik) the most interesting, and I plan on reading more of his novels.
Much of what I read when I was younger had fantasy and sci-fi elements, and after delving deeply into “classic literature” (e.g., Joseph Conrad, Leo Tolstoy, Twain, Fyodor Dostoyevsky, Alexandre Dumas, Victor Hugo, etc.), I am now looking into the the genres that first started my love of reading.
I am not sure if I’m really a “sci-fi fan”, as one week I’ll be reading Dostoyevsky and the next I’ll be reading Herbert, and my library of “general” fiction is far greater than my sci-fi library. Still, a good book is a good book, and I look forward to finding more good books in the sci-fi genre.