An important question is whether you understand the human dynamics from the show, or more because you read the comics? Because the show isn't really giving me much in human dynamics.
There are some situations that I feel are setting the table for the characters, or exploring why they are doing the things they are doing as a form of psychological grist. But I will give you the best example that comes directly out of the show because
Lori gives up on the world, on Carl and even on Rick due to the circumstances. This shows her character flaws and, amazingly, puts the responsibility for the failure of their relationship on the female, not a traditional stance in fictional relationships. Rick subsequently explains why surviving in this world is still worth it with the example of Carl seeing the deer, which shows you a lot about the person Rick is and his optimistic viewpoint. He's a cop, but it's not just a job to him. He's a legitimate good guy and I think it's important for the show to establish why people with no real reason to live will keep on living. To simply say 'people don't want to die because it's a survival instinct' is scientific, dry and cold. It makes us no better than the zombies. Examples like this continue to cement what separates humans from the undead. We aren't just motorized instinct-that is an important theme of any dystopian zombie story. If the differences aren't pointed out, either directly or intuitively, then the zombies lose their threatening quality as empty vessels for all our fears and anxieties. So it's not just a character trait, it's a necessary mechanic of this kind of story.
In a world where hopes and dreams wither and die all too quickly, there needs to be people that will justify, to audiences, why they even bother. At the end of the CDC episode, the characters choose to live for all the bullshit reasons that are generally given in any TV show.
The reason Rick gives in this last episode is a far more admirable explanation on the part of the writers to justify it. That's why I love this season and why I didn't care much for the first season, overall.
The broken relationship makes it all the more believable that she'd have a tryst with Shane. And of course, they start to build something solid and a sort of family unit to push off the desperation of their circumstances. Shane leaving Rick at the hospital was a touch choice for him to make, but the fact that he made it and took his family shows that, at the end of the day, he is a 'me first' kind of guy. He provides protection and stability to her, something Rick isn't able to do because he's always running off to help people. Shane didn't do that. He stuck by Lori, or that's how she perceives it. And when she asks him to stay, she's betraying Rick yet again. She's asking Shane to stay because she's treating her own emotions more importantly than her moral obligation. Flawed and complex character dynamics, not simple 'character is an antagonist' typecasting (although I don't really like Lori as a result, but that's beside the point.)
When things went to hell, Shane represented the stability, safety and loyalty she needed. Rick was either in a hospital bed or running back into the city to save racists. Given how things have gone down, this presents a problem.
To contrast that with the comic version:
Once Carl gets hurt, Lori breaks down.The show did a better job of it than the comic, IMO. Although in a world where social mores no longer exist, some people might abandon otherwise 'sacred covenants' like, say, marriage. So in the comic, I just connected the dots for myself because there was never any precedent for who Lori was and what her personality was in the comic. It didn't seem unreasonable to me because I didn't know who she was, and I didn't walk into it with the preconception that just because Rick was a good guy, Lori would be a good girl. But the show lays the groundwork for the dynamic. Fictional premises need a different type of elaboration in visual form than in printed form.
Now, not ALL of the character dynamics in the show are quite so complex. And they may never get there. Or they may. This situation exists because of the world they live in. It's a traditional primetime drama love triangle, but presented in a world where all the rules of a modern world simply don't apply. That is the 'mixer' element that makes it so compelling-their choices are being driven by more than simple passion. There is survival and instinct at play as well. And Rick is the guy saying 'Carl remembered the deer.' Shane and Lori gave in to insecurity and fear.
This is what I see. I could similarly break down character dynamics in a show like Game of Thrones or Sons of Anarchy or The Borgias or some other TV show I really enjoy. These are the reasons I love character based dramas. It's about the examinations of the characters. It doesn't matter which fucking characters. As long as characters are being examined in great detail, I'm there. It's why I can say a show overcomes deliberate pacing or table setting plot developments that don't seem to go anywhere.
I've seen enough, and read enough, that I generally am confident as to whether or not a story is doing things in a satisfactory manner.
The first season of TWD had some flaws. The second season is not perfect, but I don't believe it's the mediocre product you say it is.
You can continue to believe I'm reading too much into it. That is your right. I don't think I am doing that. I'm seeing what is there, in my opinion.