Cowards die many times before their deaths

When I confided to my good friend and mentor Reynaldo that I had been sucked into a vicious cycle of internet “research” - anxiety - fear - more research - anxiety - and so on… after having been experiencing an assortment of physical, non-imaginary and imaginary symptoms without a diagnosis, with each cycle pointing to a more morbid condition, he curtly responded with the following verses:

Cowards die many times before their deaths;
The valiant never taste of death but once.
Of all the wonders that I yet have heard,
It seems to me most strange that men should fear,
Seeing that death, a necessary end,
Will come when it will come

Those are the words of Julius Caesar, as penned by Shakespeare, when Caesar was alerted not to go to the capitol because death may be awaiting.

Why die many times as a cyberchondriac coward in front of a computer screen?