Maybe if everything would be archived forever, we could understand that everybody makes mistakes, and stop paying so much attention to old posts? Though I admit this is very optimistic view on human behavior.
Ancient posts rarely do get any attention though unless you are a politician and even then most people agree its worthless information. There was the recent event with the guy from Canada having photos of him wearing blackface almost 20 years ago and most people agreed that something so long ago is totally irrelevant to today.
