I miss the old approach to the reasoning behind Dexter's kills.

Lately, it seems like he doesn't enjoy them as much and sees it as an obligation, and acts like he wouldn't mind quitting. It seems soft, and really boring in comparison to the old Dexter who would admit that he ultimately enjoyed it and viewed it as kind of a stress reliever. I can see how they had to make him evolve a bit, and I understand him developing emotions, but I just don't like how they're making the Dark Passenger almost a separate entity like the third Dexter book (awful).