It's not my job or your job to worry about everyone. If someone has an essential job in a grocery store or delivering groceries or Amazon packages, that's their choice.
Saying you would rather die doing a mitzvah is absurd. The priority has to be to not die, not that if you die it should be doing a mitzvah.
Nothing wrong with being dependent on someone's (usually someone less wealthy than you) personal choices to do something that you need done that may result in them dying or transmitting a disease, as this is the way of the world, but citing your nobility of heart in not doing such a service when you are utilizing to someone else to do it for you is slightly tone deaf.
if/if/
conjunction
1.
(introducing a conditional clause) on the condition or supposition that; in the event that.
You have come into contact with the word "if" before, I suppose? It's a relatively commonly used word in colloquial vernacular.
Just curious if your religion has a concept of Pikuach nefesh. Mine does.
Just curious if your religion has a concept of Talmud, which this was quoted from, or a G-d that runs the world, which mine does. Do you know what percentage of the fatalities in Italy were medical workers? Italy is not a third world country.
ואת דמכם לנפשותיכם אדרוש
את השחפת ואת הקדחת
I'm not sure where to even begin with the whole comment, and perhaps I shouldn't. This part that you think makes you sound like a selfless martyr is the height of arrogance. Who do you think you are to "be ok with your own mortality"? G-d is your dependent. He wouldn't have created you otherwise.
I take it you don't contemplate your mortality. You should. It's good for you. שוב יום אחד קודם מיתתך, ואין אתה יודע יום מיתתך. One should always hope for the best and plan for the worst in life. That is what life insurance is for.
Were Hashem to decide my time is up, whether I am crossing the street, at a beach, in a store, in a hospital, or in my living room, I hope it's in the midst of doing a mitzvah and not something useless. There's nothing necessarily wrong with watching Netflix on the treadmill, but I hope that's not what I die in midst of.
Obviously, one should make every effort to avoid dying, unless it is for something worth dying for, as defined by your Creator and delineated by the Poskim.
One who has nothing worth dying for has nothing worth living for.