Since stress and worries actually causes us to die quicker how have these survived

evolutions scrutiny? Stress and worries are caused by the fear of the death so if death is just a natural part of life as the world has come to believe why do the emotions of stress and worry continue to exist? Why do we cleave so tightly to life as though there was something wrong with dying? Where does this instinct to hold on to life come from? When did atoms and molecules decide that these so called chemical reactions was worth preserving?
Panic kicks in and B is dead and A survives because he is able to act rationally rather than emotionally.
Why does evolution favor survival so much? Why does evolution has such a fixation on life and its preservation?
Pot smoker do so to escape stress and yes those who strive to create a better world do experience stress but that doesn't mean that it has a evolutionary benefit.
You're talking about something observed but not reason for it.
Why is survival so important?
Kills what? Kills chemicals (molecule)? Even the least evolved bacteria will seek to escape death if possible so explain why these so called living molecules are so concerned about its chemical make up?
What is the chemical make up of the desire to survive?
 
The most highly stressed out people are usually the most successful. Those who aren't, just kinda sit up, relax, and smoke pot.
 
stress kills us quicker?

the alternative is doing nothing when about to be threatened or killed.

not the greatest survival trait, right?
 
Because this is the first time in human history that we have life expectancy above thirty five years when stress and worries begin to actually affect health therefore creating an observable phenomena.

Additional Answers:
The stress your talking about is from taxes and rush hour traffic. The panic causing you to try to outrun a lion IS rational.

Evolution itself is not a sentient force, it refers to the successful passing on of genes and the mutations that either assist or hinder a species as a whole. Individual members of a species have developed the instinct to struggle for survival over billions of years.

We've observed it because this is the first time its coming up in human history. Evolution takes place over hundreds of thousands of years, and our extended life spans and even medical science itself about three hundred years old. The reason for it is that worrying causes stress, medical stress, which forces a constant adrenaline rush over long periods of time that lowers immunity and cellular regeneration in favor of immediate energy for 'fight or flight' response. FOF Response can't help you with taxes, overdue bills, or rush hour traffic, hence, happier people, or more rational people who recognize that these are problems and not threats, live longer.

Why is survival important? they who survives longer typically has better genes and can pass them on to the next generation. Philosophically speaking? That's up to you. What's your reason? If you know it, than that's why. If you have no reason, than I cannot answer that for you.

I don't know if they've isolated the gene for that, but when they do it will be something along the lines of "GGCCATGCATTCAGTAG"

DNA is made up of four nitrogen bases:-
1.)G=Guanine
2.)C=Cytosine
3.)A=Adenine
4.)T=Thymine
 
If you were on a plane that was about to crash and there was only one parachute, yet two people on the plane, would you say to the other person "Oh, you have the parachute. I'm not stressed about this...".
No, you wouldn't..... you would scream and cry and try your hardest to get that parachute.
Stress and fear of death is required so that we can evolve. If we weren't scared of death, the human race would've died out a long time ago.
 
Caveman A is unable to experience stress or fear for his life.
Caveman B can do these things.
They encounter a lion.
Which of those two do you think is our ancestor?
 
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