Yeah, but who's gonna do that without a car? Daryl's the only one with wilderness survival skills, but he knows that Rick was telling the truth because he figured out that Shane was lying about Randall from the tracks. Woods are full of walkers. No one wants to face that. Plus, as Andrea said, Shane's "presentation" was off. The group perceived him as more dangerous. Hasn't Rick earned a little good will once they've had a good night's sleep and maybe the shock wears off? Just playing devil's advocate. I love the dynamic the show has set up for next season.
I have a hard time believing that the writers won't temper Rick just a little bit. The television audience isn't the comics audience. A long term protagonist can't be pushed competely past the point of no return and keep a huge portion of audience. I could be completely wrong, but does anyone else agree? I'm curious. If Rick's pushed past the point of no return morally, then they've written themselves into a real corner.