They are never going to cut anything that could in any way affect them though...

Reality is not nearly as interesting as what people imagine.

Headshot won't work, you need to find and destroy a lich's phylactery to kill it.

If your doctor tells you that it will go away, you need a better doc...

Everything leaves a permanent mark on you, mental or physical, even if you don't notice it. It's how we managed to survive for so long, by adapting to new things constantly. The system is pretty crude, but evolution is crude and merciless, long term quality of life has never been it's primary 'objective', only making the species fit for survival. Mental stability isn't all important in the grand scheme of things, not when plenty of other things will easily kill you sooner and easier.

I mean, it had giant prehistoric lizards, not horses.

Now if was a giant horse, you would have a point.

So all you need to do to get a promotion is to kill the boss?

So they want to make animal highways?