It's funny how when everyone is so far away everything becomes a bit unreal... I guess it takes time getting used to the fact that you might end up living so long that you will still be here when everyone who knows your nick name is gone.
I wonder if you knew that for sure would you want to live that long a life or would you rather retire at a ripe old age?
In any case nature will take care of such things I guess. No need to worry. Take it one day at a time and make the most of it.