When I miss getting a cel I could have gotten
(typically because I think about it too long, or
I forget to bid before an auction ends and
remember too late) it haunts me for a long time.
I even have a folder (named "Ones that Got Away")
on my PC, containing images of these cels. I
periodically torture myself and tell myself what
I fool I was by looking at these images.
On the other hand, it does act as a kind
of "shopping list" or want-list. I never make
the same mistake twice.....