If it is rational, that means it's beneficial, therefore not to be medicated away. Unless "rational" somehow includes "considering useless or counterproductive

If it is rational, that means it's beneficial, therefore not to be medicated away. Unless "rational" somehow includes "considering useless or counterproductive elements", and I would reject that. However, I would not consider it to be terribly rational, it depends on the equation you're solving. If you're a single mother of 5 little ones, you will fear for their survival. If you're a soldier, well, your inability to face death may get many others killed.