For f sakes, there's a slight difference between veterans not wanting to talk with their wives and grandchildren about the horrors of war vs debriefing with superior officers after battle (which they did). This humongous difference is only exacerbated when applied to TV characters. The mountain of assumptions necessary to watch this show make it taxing to remember all of the suspended disbelief system. And for the faithful a lot of this is via showrunner or post-show not actual show. I.e. Kirkman says there's no cure and no happy ending, so his show's characters never bother to look for an oasis and no Dr or character ever discusses or attempts to find a cure. As if once Eugene faked them out they all concluded 'heck, if chicken genius mullet doesn't have an answer there is none'. Also Oceanside ought to swim & boat out to an actual island, would make them Australia in terms of hiding from or facing the rest of the nitwits. These folks have nothing but time, but no one has built anything but walls and huts, they're dumber than cavemen. I know, on an island they're cutoff suspended disbelief rationale yada and decimated if invaded yada yada. No, no no. No one is on an island because zombies swimming is somehow unrealistic!