Must be terrible! The same reaction I got after finishing book 3. George R.R. Martin probably killed off a lot of great characters (spiteful and non-spiteful alike) in that book than books 1 and 2 combined.
PS: How could you hate on this fluffy, nerdy guy? Let's all be patient guys, Winds of Winter will be coming soon. Let's have faith with GRR Martin, he knows what' he's doing. He is not our bitch, as Neil Gaiman once put it off. :)