Well in many ways Star Wars and religion are intertwined (the "Force" huh?!). It's about the kinds of choices we have to make in our lives about darkness and light. ; )
That, and I think science fiction tends to attract inquisitive individuals, so we tend to be interested in discussing "such things."
Off hand comments can lend themselves to hearty debate. And yes, since there ARE so many different views, there's always something neat to hear from someone else's point of view.
If this kind of discussion bothers you, that's okay, you can ignore it if you wish. However, if you feel like joining in, feel free. All are welcome!