Why do you call those things assumptions? That says more about you than the people you claim are assuming these things.
It depends on the circumstances.
Sometimes having control over your fight-or-flight reaction is better for you, personally, given your value system, than say trampeling fellow coworkers in a panic on your way out the door.
Don't judge too harshly people who don't share your starry-eyed view of the world. Let them have their peace if they're so resolved.