Really, the idea of healing in Cata is kinda overblown, at least in my opinion. This is kind of the reason why I always take the traits Flimsy and Slow Healer.
When I get myself smashed half to death by a zombie brute, I shouldn’t be able to just sleep on it and be fine the next morning. I really, really hate Fallout 3 style healing like this. At least with SlowHealer+Fragile/Flimsy, it takes me several days to fully heal the damage done, like it more realistically would. Getting mauled almost to death should at the very least put a character out of commission for a couple days, maybe even a week or more, while they stay in a safe place to heal up and recover. I mean, shit, when I have a nasty fall or pull a muscle, I can feel it for a week or more! It doesn’t just go away after a single night’s rest. Getting damaged should be something you try to actively avoid, not just a minor nuisance that can go away by going to sleep or just using a bandage. All in all, damage means nothing because healing just happens too fast / is too readily available, and I really, really hope this gets changed some time soon.
Another thing is the universality of HP. How is it that when I’m in a burning building and slowly suffocating, I can somehow negate this by plastering my torso with cotton balls and bandages? How in God’s name would that stop me from suffocating? The same goes for poison, and many other kinds of damage that aren’t just plain “the zombie hits you for x damage”