Oh yeah. The Western thing might also explain why I love Firefly.
I LOVE Westerns. Love, love, love them. For ages, I've been saying that Western and Sci-Fi are practically the same genre, anyway, and that someone should figure out how to combine the two. When Joss did it, I was hooked. And also, I wished I'd been the one to write it. lol.
The Western and the Sci-Fi are both about exploring and testing boundaries -- physical, technological, and cultural. The characters in a Western press forward out into the uncharted reaches of their world. They encounter alien peoples and alien technologies. They encounter new and terrible weather and/or geographic conditions. They either struggle to build something resembling their society from the ground up or they struggle to resist the encroachment of a new rival society. These experiences grant them insight into themselves as well as into the human condition in general. All of the same things can be said of Sci-Fi characters. I mean, in a Sci-Fi, the space ship crew = cowboys and alien peoples = Indians. The point of both genres is to get your characters out there on the edge of human society and experience so that they can challenge established parameters. Firefly, I thought, did an excellent job of using the conventions of both genres to accomplish this goal in a unique way.