Because the story and characters are piss poor. Every character is annoying in their own way: their dialogue, their voice-overs or personality. Edge Maverick whines and overreacts; Lymle is annoying with her constant 'kay. Then you have this cat character who meows every ten seconds, and there's that angel girl who has the worst voice-over ever. Also, this game has weird animations; the characters look all stiff during the cutscenes.
The only decent thing about SO4 was the battle system, but you have to put with the annoying cameras, poor save points placement,etc.
Tri-Ace should just stick with Valkyrie Profile. SO has gone downhill after 2; Resonance of Fate had potential but it was underwhelming. If they add some variety in RoF2 and have an actual focus in the story, then it might be good.
