While it is a decent show, inconsistent writing and frequent employment of contrivances makes it not quite a favorite for me.
Just because they want to exploit the creepy on-screen chemistry between Dave Annable and Emily VanCamp (who may or may not be dating in real life), I did not like how the writers switched gears two seasons in and made Rebecca not quite a Walker. Then they had to go and introduce Ryan Lafferty, as if there weren't already enough Walkers to go along.
Does Robert ever spend any time in Washington? And for someone who made a career in politics, Kitty does not seem to remember that Robert has responsibilities to fill as a Senator, and not just as Kitty's husband and baby daddy.
Can the Walkers be any more self-involved? There is always some gargantuan issue facing each of them every week, and they all choose to face the problem by excessive drinking (except for Justin, who's a druggie instead). This usually leads to impulsive and stupid decisions (Tommy putting Holly in charge of Ojai, Kevin going to work for Robert etc) that turn out to be plot devices to advance the story. Then they'll blurt out every insane or hurtful thing that comes to their minds, totally ignoring the fact that they are grown-ups, especially Nora. It's not surprising they don't seem to have any friends.
I do agree that it is very well acted. Kudos to Sally Field and company for making such ridiculous characters believable. The disastrous Walker parties and teleconferencing are hilariously enjoyable, but there are less amusing ones now that they have to keep the story's 437,928 different storylines going.