Well I only happen to think that only handful of my friends and colleagues do anything of any worth with their working lives. I wouldn't dare say that of course! I'd have no defense if they offered the same retort - and then I'd weep for a few hours thinking my life was of no consequence.
For many employers the subject someone studies is moot, it's the skill sets built around the study that are important. Showing that you can apply yourself to something.
Not that I want to poo poo your idealism.