I don't see why everyone has such a problem with this movie - I thought it was okay, it wasn't the best movie I've ever seen, and it didn't have the best acting ever, but it certainly wasn't the worst movie ever.
The ending wasn't too good, but the movie wasn't too shabby, the storyline was good and it proved to keep me entertained for the full two hours. I learnt a lot about 50 cent during the movie, even though I'm not a fan of rap and/or 50 cent himself, I still enjoyed it.
The movie gives you inspiration, if 50 cent can go through a lot and come out of it a billion dollar rapper at the end, it makes you think that you could probably do something on the same level.
You don't have to like rap and/or 50 cent to enjoy this movie and read into it. If you enjoyed the trailer, don't let the bad reviews put you off, that's what I did, yet I liked the movie.