Some things may be up to us, but everyone’s time comes. I have to assume that God has His reasons for someone living to be 105, and someone else dying much younger.
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1000 million years from now, maybe that will seem like an irrelevant difference.
Do you suppose the Earth will be here that far in the future?
If humanity survives that long, I suspect our far descendants will probably be living on other planets by then and won’t even remember Earth...especially if they had originally arrived there as bits of meteor-borne ‘flotsam’.