The movie was entertaining the first time I saw it. Sure, it's not a masterpiece by any sense of the word, but neither were the original 3...they were pure sci-fi camp. The new 3 tried to duplicate it and failed, but that doesn't mean they aren't entertaining (outside of whiney-ass Anikin and that dipshit jarjar).
I'll see it for Natalie Portman alone <3
See, you can tell you're a 20-something. You weren't around when Star Wars came out in 1977. Back then, NOBODY had ever done anything remotely like that before. Lightsabers? WTF??? The Force? Whoa! R2-D2? COOL! Darth Vader? SCARY!!!!
Before Star Wars, sci-fi action movies were campy, half-serious things involving guys in Halloween masks intent on eating brains of girls in bikinis that washed up actors did to keep their career on life-support. Everyone takes for granted the path that Star Wars put us on, not to mention it's invention of the special effects that pepper the movies of the last 30+ years.
The reason the first 3 Star Wars films were great is they had defining and unique heroes, an iconic villain, and a set goal.
The new series didn't have any of that until the last movie, and even then it was mediocre. The new series spent most of its energy trying to justify itself as a tie-in to the old series, and the scripts suffered. Heck, I wasn't even sure who to root for in Episode 1 until 3/4 through the movie, and I didn't really care about the group of heroes by then to do much rooting. Episode 2 defined the heroes a bit better, but the dull script made it a sleeper. Episode 3 finally got the story-telling part right, but by that time we grew such a distaste for the characters that it was difficult to pull ourselves out of that funk.
Also, I feel the overuse of CGI kills any movie, and this is evident in the new series in particular. Models, puppets, and real sets have a "tactile" feel to them that make you feel like you're actually there. (They wanted to nominate Yoda for an Oscar for Best Actor (true story!) but there's a rule that the award can only go to a real person.) Hand-making something gives you time to think things through on how it works, what it's purpose it, and if it makes sense. CGI lets you throw anything you want in instantly, and often the quality suffers.
For example, I'm going to jump franchises over to Star Trek as an example of CGI degradation. Here's a clip from Star Trek III. Look at the beautiful use of models giving a sense of how enormous yet graceful the Enterprise is:
Stealing the Enterprise
In the new Star Trek movies, the Enterprise maneuvers around like a fighter, complete with shaky cam and lens flares...taking away from the drama and intensity of the scene.
Fire! Blam! Kapow!
And that, my friends, is not only why the new Star Wars series didn't catch on as well as the first series, but why sci-fi movies today in general are poor.