I've never been into science or sci-fi. Always preferred my own planet to other planets or outer space. Reading about exciting new worlds can be fun, but not so much when the book is 400 pages and / or it's part of a series. Throw in a lot of technical jargon and you've lost me. Fantasy is included here, because sometimes the line is blurred and other times the same complaints apply. That being said, there are a few that rise above.