It is time for me to go, I have decided To leave behind the world I've known and to depart from it But if in my absence you remember how I left I would ask that you cast aside the memory of me To never remember and to forever forget
...
Your departed friend
The way one leaves can in turn tarnish the memory others have of them completely. It may rest easier on that individual if they were to be forgotten entirely. (Thoughts from the past :))