Science fiction has been described as the literature of ideas.
I agree, sci-fi is one of the most inventive and imaginative genres of literature. 
I like that It usually avoids the supernatural
Yes, good science fiction usually utilizes very good science and mixes in unique ideas to alter the story. I personally enjoy forward-looking science fiction. 
Much of the best was written following the scientific revolution and major discoveries in astronomy, physics, and mathematics.
I agree, some of my favorite science fiction literature is from Asimov.
Isaac Asimov
Isaac Asimov (;  – April 6, 1992) was an American writer and professor of biochemistry at Boston University. He was known for his works of science fiction and popular science. Asimov was a prolific writer who wrote or edited more than 500 books and an estimated 90,000 letters and postcards. His books have been published in 9 of the 10 major categories of the Dewey Decimal Classification.
Asimov wrote hard science fiction. Along with Robert A. Heinlein and Arthur C. Clarke, Asimov was considered one of the
, parallel universes and extraterrestrial life. Science fiction often explores the potential consequences of scientific and other innovations, and has been called a "literature of ideas". It usually eschews the supernatural, and unlike the related genre of fantasy, historically science fiction stories were intended to have at least pretense of science-based fact or theory at the time the story was created, but this connection has become tenuous or non-existent in much of science fiction.
The genres Western.
Western fiction is defined primarily by being set