Human beings are naturally flawed when it comes to time and memory. The past is forgotten, or it is believed bad things will not recur, and people become bound in their current problems. That which afflicted the grandfathers of their grandfathers is a distant, dim thing, and not as important as present concerns, no matter how trivial.
The High King's Tomb (ed. Hachette UK, 2011) - ISBN: 9780575099906