I think the show was cancelled because the ratings might have been very low. It is unfortunately a fact that a show MUST include severe sexually explicit images, or language, or anything provoking sex, to have high ratings. We can see that shows like Murray have been going on for years and years and have not been cancelled. Unfortunately, the majority of the TV's audience (which spend a lot of time watching TV weekly) include people with less demanding jobs. Depending on the job level, you can have a general idea of what amuses that certain population more. The higher the level of one's job's difficulty, less time they have, and their taste of movies are different. Clean, nice, calm, family oriented series, doesn't get enough watchers to earn its costs!!! Unless it involves some kind of violence or cruelty, or any fight scene, no matter for the good or evil cause. Like The Last Sammurai, which was a great movie, but did not sell enough. The earnings were mostly due to fight scenes, and not the beauty of the movie as a whole.
Review of Hope Island
