Fun to play with friends, but be prepared for a lot of grinding if you want gear. It's a Korean game after all.
It's not meant for casual gamers like the wow easy mode fans prefer, it's based around pvp pretty much and is still considered a new game in NA.
New patches are due to be released with new content and some possible retarded nerfs on two classes (not verified yet since the notes are from Korean patch and will probably change in NA, no matter how doubtful that may be).
I would suggest you to wait till new patches are released before asking for opinions and then decide yourself, as currently as the game stands now, there's some serious issues that needs addressing and also if you don't have anyone to play with, the game will feel boring due to the endless hours of grinding and garbage drop rates.