Crime Dramas at 2 in the morning

What is it exactly about crime dramas that I love so much? I watch way too many... i know that for sure. White Collar, NCIS, Chuck, Castle, CSI NY, Bones, Dexter... the list goes on. I guess they give me something to do and i can pick up in the middle of a season and not have to worry about storylines per se and they generally have this great banter going between the protagonists and thanks to it being tv there is always some eye candy atleast. messer on csi ny, matt bomer's fedora on WC and Zachary Levi's adorable next doorness on Chuck. plus i like happy endings. and someone ends up happy at least in these shows. and they give me something to do during the summer when im awake at 2 in the morning and the only thing on is CSI NY.