No one "earns" a purple heart....one receives a purple heart for being stupid, arrogant, mentally unbalanced or simply UNLUCKY by being in the wrong place at the wrong time. The IDEA in warfare is to make the other guys get purple hearts....in the perfect world they would receive this medal "posthumously". It does not take a hero to receive a purple heart...I know, I have 1, and I would have felt a hell of lot better if I had never seen the damn thing.
How do I define the reason for the supposed medal....take your pick, any of the prerequisites could be applied....being a hero was never a sought out option...survival was the personal motivator. I know several recipients that I would not piss on if they were on fire. Nothing personal but a prick is a prick...no medal changes that character trait.
All I have ever asked of anyone before they judge me....they must have had their proverbial ass in the grass alone side me....or simply, SHUT THE HELL UP.