> Space opera is a subgenre of science fiction that emphasizes space warfare, melodramatic adventure, interplanetary battles, chivalric romance, and risk-taking
> A science fantasy is a cross-genre within the umbrella of speculative fiction which simultaneously draws upon and/or combines tropes and elements from both science fiction and fantasy
The core difference between science-fiction and fantasy goes back to the philosophical debates about the nature of the universe in ancient greece, the difference between a mechanistic view of the Universe (which we have come to accept as the foundation of science) and a teleological view of the Universe. Star Wars has a teleologic view of the Universe, it's baked into the DNA of the material. "The Force", the light side, the dark side, being "strong in the force" based on your heritage, and so on. That's the foundation of Star Wars.
Star Wars is not science fiction, it is fantasy or mythology in a science-fictional setting. It is fusion cuisine.
It clearly doesn't meet some definitions of science fiction but would still be almost universally called that. Try (getting in a time machine and) going to a Blockbuster Video and try to convince them that Star Wars doesn't belong in the science fiction section.
> teleological view of the Universe.
Almost all fiction is almost completely teleological. Nothing ever happens by accident in fiction, everything that happens has a human motivational cause. The characters' incredibly improbable and complicated schemes almost never fail by accident as they very likely actually would but always due to confrontation or betrayal. (See also: political narratives.) The human brain just cannot help but pay attention to sex, alliances, confrontation and betrayal.
The Force being with you by birth is a bad theme because it takes away the humanity of the people that have it. They succeed or fail in part not because of their intentions but because of magic stuff they happen to have that you cannot have. It's painful to watch.
> They succeed or fail in part not because of their intentions but because of magic stuff they happen to have that you cannot have. It's painful to watch.
A great deal of success or failure in real life comes down to legacy, genetics and random chance, or "non-magical stuff" other people have that you cannot.
