The combat is far from perfect, but when you play it like Witcher 3, and not like some mindless hack and slash, its quite fun. The coolest thing was finding out the weaknesses of enemies and using signs/parries to obliterate them....again, anytime I see people complaining about the combat, I have to see them play. A lot of the time, it ends up being user error more than anything else. Keep in mind that there are people on here who think the fighting in the DMC series is bad....
As for the story, you weren't paying attention. Or you just don't care for the plot in general.