First, to clarify, I wasn't alive when the original movies were released. I still negative four when the Return of the Jedi hit the theaters, and it wasn't until 1994 that I was able to see the movie for the first time. Despite the fact that I've seen the movies dozens of times, I remember thinking "hmm...wait, so what's the big deal?" the first time I saw the original. It was fun, it was interesting, but there really wasn't much that screamed "this is the most amazing thing you've seen in your life". I think I enjoyed individual scenes and moments more from the movie, and the toys were probably my favorite part, but the films have always just been "good". The sequels followed a similar script: I knew I was supposed to like Empire the most, but it seemed sad and slow, and I knew I was supposed to like Boba Fett and Jabba the Hutt, but really I just wanted to see more Emperor and Darth Vader scenes. The original movies aren't perfect...which is fine...as long as we can all agree to that.
Of course, what the original movies DO have is a pop culture legacy...which for me is probably more impressive than anything else. Even though many great films have come out since 1977, none have come close to the commercial and cultural influence of the Star Wars movies. To me, that's what's always been fun about the franchise...not so much the film itself, but all the other stuff that goes with it. As the new movie approaches, just ten days away, it's important to keep all of that in perspective. The upcoming film will certainly be good...but it won't be perfect either. What will be fun are all the new additions to the Star Wars legacy, and the continually growing world that's been unfolding.