Sometimes, good things do come to those who wait. It is possible that the reason for sayings to stay around for long periods of time is because things really never change.
Sure, hairstyles and fashion change only to become “new” again in another 20 or so years. But, people never do change. The same feelings; the same thoughts are pretty much a part of the human psyche.
If someone is used to being treated badly, it is sort of uncomfortable to be treated nicely. So, if we are treated nicely, why do we always try to create a problem?
Maybe everyone is egotistical. Psychology is correct; everything in life good or bad exists because of someone’s ego.
On my mind (again?) 