Isn't anyone else freaked out by the fact that unless science indefinitely extends human life... you will die some day?

I have heard that this may happen within my lifetime, but it may not too... and even if lifespans are extended in that time the thought of dying is really really scary. :( I don't want to die, and it's so scary that so many different generations of humans have all lived and died... so many important people in history too.
Isn't anyone else freaked out by the fact that unless science indefinitely extends human life... you will die some day?
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