One group that does not value perceived losses differently than gains are individuals with autism, a disorder characterized by problems with social interaction. When tested, autistics often demonstrate strict logic when balancing gains and losses, but this seeming rationality may itself denote abnormal behavior. "Adhering to logical, rational principles of ideal economic choice may be biologically unnatural,"- Colin F. Camerer, Professor of Behavioral Finance and Economics, Caltech (via Arnold Kling).
Libertarian political ideology is premised on the notion everyone adheres to logical, rational principles of ideal economic choice. Thus, libertarianism is applied autism. But then you knew that.