Do you know how awful Jurassic Park would have been had they kept strictly to the book? There would have been strange interludes where the DNA sequences slowly revealed things. And it wouldn't have worked out very well at all.
Comics are an especially strange breed of this, as it's storytelling works in a peculiar way. If you made a movie with the pacing and subtlety of a comic series it would all be either moving extremely quickly or in slow-motion. I think TWD trying to slow the action down and take the dramatic approach is a good thing for the medium. Do I want Shane dead? Of course. But am I mad at the show because he isn't? No, of course not, because I trust the show to do what it needs to to create a great narrative.
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"SMOKEDOG42O taught me how to feel love, but fetus taught me how to make love." - Pablo Escobar