When I was in my early 20's, I read quite a few sci-fi books, mostly Larry Niven and Frank Herbert. Then I read 2000AD for a while, until a switch turned in my head and I didn't want to read it any more. I recently started reading science fiction again. I read Neuromancer by William Gibson, which I could not make head or tail of. Last year I read The Time Machine by H.G. Wells (different, short and disturbing), The Affinity Bridge by George Mann (steampunk, quite fun) , The Day of the Triffids by John Wyndham (cold war, post apocalypse), and The Left Hand of Darkness by Ursula Le Guin (disconcerting, pretty good science, almost queer literature). Currently I am reading The City and the Stars by Arthur C. Clark (fun enough, but slightly disappointing, TBH, in light of his reputation). I have The Martian by Andy Weir on my shelf waiting to be read. I also intend to read Frankenstein by Mary Shelly and something by Issac Isamov, probably I Robot.