goodbyes.

I just finished editing a chapter in the novel about a goodbye.  It made me reflect on the goodbyes in my life.  The moments that i re-live in my mind.  The moments i have almost forgotten about.  Goodbyes can vary so much in emotion, from bitter-sweet, to complete sadness, and everything else in between.  There are the goodbye for now's and the final goodbye's.  And sometimes i know for myself, i don't even realize at the time when i am in those moments of finality.  Maybe it's not wanting to admit it to yourself at the time.  Not wanting to see the end of an era, the end of a relationship.  What is a goodbye that sticks out in your memory?  Do you wish you could go back in time and experience it again?