Some of us use the same picture over and over again to express different things, different feelings.
As I believe that each one of us sees a different thing when looking at the same image, its's quite normal that one person can feel differently about the same image at different times as well.
We have lived, seen and felt so much since the first time we saw it, that it can be quite an other image the following time.
It's just like reading good books. The first time you understand the story in a certain way, and when you read the same book a year or two later, you may find something new in it, something you hadn't understood at the first lecture. There are books I like to read over and over again.
Why couldn't a picture have the same effect upon us?
(I want to thank Mick and SusuPetal who lately have shown old pictures in a new way. And Cergie, too.)