I enjoyed the new film. Overall, it was a fun experience that was well-made and well acted. They had a great balance comedy and action and they also didn't use CGI frivolously.
I did think that some of the plot was very derivative in that it didn't really try to bring anything new to the universe (the new "chosen one" being found on a desert planet, the whole father-son thing, the Starkiller which is just a bigger, badder Death Star), but I can understand why they did that.
1. They probably wanted to play it a bit safe by going with what they - and we - know. What's tried and true within the universe.
2. They wanted to pay homage to the original films.
It seemed very much like an establishing movie made as fan service and possibly as an apology (at least that's how I see it) for the prequels.
And I'm perfectly fine with that. I'd much prefer they make a good movie that's "safe" than one that tries to outdo a 30 year legacy, which is what the prequels attempted.