More like a completely dumbfounded dad and an angry baby.??Dexter didn't get angry about Rita's death until the first episode of the fifth season when he bashed the guys head in with an anchor after he said some derogatory things about his dead wife.
Dexter is most often devoid of emotion.??He is/was merely "fond" of his family (which he aquired only as cover anyways).??I think the only person he actually "loves" is his adoptive sister Debra.??Hell, he even killed his biological brother in the first season when he had the choice between the two.
I think he's slowly developing a conscious as the show progresses though.??I think that's what it is actually all about.??He was this big time serial killer killing all of Miami's murderous elite.??Now he's becoming "fond" of other individuals and these connections are causing emotional turmoil within Dexter which is causing him to mess up and then have to go against Harry's code to cover his tracks.
I think the show will end with either him dead (probably with his expertise passed on to Harrison), incarcerated (probably with a "I'm gonna kill all the murderers in here" twist), or out of the killing game for good.??I of course hope it doesn't end, but they aren't very good at developing seasonal plots.
Season 1: He's chasing a serial killer he idolizes (Ice Truck Killer).
Season 2: He's found out (by colleague James Doakes).
Season 3: He's found out (by ADA Miguel Prado) and his new "friend" decides to take the law into his own hands too.
Season 4: He's chasing a serial killer he idolizes (Trinity).
Season 5: He's found out (by Boyd Fowler victim Lumen Pierce) and his new "friend" decides to take the law into her own hands too.
Add to all of this the fact that certain developmental plot points from previous seasons are never passed on to the following and new characters aren't introduced very well (think Batista's relation with the vice cop lady and the nonintroduction of Joseph Quinn).
All of these make me hate the writers.??I'm glad the cast makes up for all of this with awesome acting.??

Either way, the plot points will get too stale for the actors to bring life into after too long. :/