I love it! I think that it's the bee's knees.
But what I have noticed is that there is a sizeable amount of people who more or less hate the whole genre. Several of my friends here at uni. seem to have allergic reaction whenever I mention anything Sci-Fi and automatically dislike something just because it fits into that genre.
Sure, I knew people who weren't fans before I came here, but they at least thought Lord Of The Rings (yes, i'm including fantasy) was OK, or maybe the 1st matrix. But i'm just amazed how some people can have such negative opinions about ALL of it. My conclusion is that they must be evil to think such a thing.
I can't really say why I like it, but I certainly do like it. Personally I'm currently enjoying the final few episodes of Enterprise (the last two seasons have seem big improvements), waiting for the 9th season of SG1 and just getting into the new Battlestar Galactica which is great. I should be going to see Star Wars later, hopefully it will be better that the other 2 prequels. I'm not a massive fan of Star Wars, but i'm looking forward to it.