I thought it was decent

Rating: 5/10 (20 December 2019)

Firstly I would say not to pay too much attention to anyone that gives the film a 1/10 or 10/10 - this film doesn't deserve either of those ratings.
There is a major over-arching story to this film that isn't present or hinted at in the other two films in this trilogy. This will be a major turn off for most people.
If you can accept that then I think you'll enjoy many aspects of this film.
The Cons (mainly story based)
1. A main storyline that comes from no where.
2. Adding new force abilities that haven't really been eluded to in the past.
3. New elements of the universe are quickly introduced and sometimes are completely disregarded.
4. Some themes and parts of the plot go no where.
5. In the first 30 minutes there is a lot of exposition that is enough to fit an entire film.
6. Introduction of new characters and sidelining of others from the trilogy.
7. Trying to appease all fans by adding unnecessary elements from the other trilogies. There's a lot of pandering here.
8. Stakes that are presented then immediately dropped.
9. A lot of nitpicky things. I personally didn't like the way the departure of (at least) 2 characters were handled, but I can understand why they were done in this way.
10. The pacing is off. This is mainly to do with the exposition. It jumps from one thing to another so quickly, I feel like some elements could have been dropped altogether and more time could be spent in one place at a time.
The Pros
1. The acting was great. Rey, Finn, Poe, Kylo are more fleshed out in this one and the actors do a great job. They use Carrie Fisher excellently and work around her real-life death well.
2. The music is, as always fantastic. There's not too much new material here, but it works really well in many parts of the film.
3. It all looks beautiful. The cinematography is great. It's not breaking any new ground, but it all looks stunning. The new environments look great and the CGI is good.
4. It's funny, without being over the top. There are some good one liners, but it's not oversaturated like in Avengers for example.
5. It closes off the story line quite well. The addition of all the exposition wraps everything up quite well.
6. They introduce some new characters that add some backstory to our main characters.
7. There is a lot of fan service as mentioned before - but this does add (at least) 2 very poignant and emotional scenes, which I really appreciated.
8. It's a Star Wars film. We have aliens, spaceships, new worlds, the light side vs the dark side, destiny, hope and love. If you've enjoyed any other Star Wars film, you should see this one as it will have many aspects that you enjoy.