Exactly Cliffy, you put your finger on it, that is exactly what Isaac Asimov said, as to why many old codgers insist that the good old days were so great, were almost a paradise, in spite of the overwhelming statistical evidence against it.
These people were in the prime of their life in the old days, the world was their oyster, the world was full of promises. They felt good about themselves, so they thought that the times were good for everybody. They blot out all the unpleasant memories, unpleasant experiences and have some idealized concept of the ’good old days’ in their mind.
Now, the body has grown old, it is squeaking, creaking, disillusionment has set in, they don’t feel in the prime of their life. So they also think that the world has gone to the dogs.
This is what Asimov hypothesized, and I fully agree with him.