I didn't like it either, but that just seems to be the way it is with some games...some people like it, and others don't. The story was absolutely ridiculous and asinine and full of stereotypes, imho...but again, some people go for that.
I didn't like it when I first played it. I tried the demo a couple of times really didn't get on with it. When it came up on PS+ I downloaded it to give it another try. After finishing the prologue and properly getting used to the controls I was hooked. Beat it 5 or 6 times, beat Revengeance mode, unlocked all the stuff I wanted. It's tons of fun.