If Bitcoin goes down hopelessly, those bitcoins will be forgotten and destroyed permanently.
I read this twice trying to understand what you was trying to say, i failed. Do you mean if bitcoin goes down it would be forgotten or destroyed ? That may well get forgotten by the guys who are init for a quick buck and get scared because it drops a few dollars lol
But most of us will not be forgetting nor destroying coins just because it may lose some value i will be honest i am so far past the point of caring i will hold this for as long as the chain is still alive and kicking.