Sci-fi the..genre??

In Pre-AP English I read a Sci-Fi book titled The invisible man by H.G.Wells. The novel was written mostly for more mature readers. The vocabulary was very advanced, a little too advanced for my taste. However, i found upon completion that i loved the book. I have never been very "into" the genre of Science fiction but i have been exposed to it many times. Before this assignment I thought Sci-Fi was only for the so called geeks who watch Star Wars and Star Trek. I have now come to realize that science fiction, like any other genre has its good books and its bad books.