> Fix death please, that's a good way to prevent the fear.

Even if you were able to postpone your non-existence to some late stage of the Universe, it's all but assured you will have to end eventually in light of postulated Cosmological denouements. In other words, you will not exist forever due to physics.

That being said it would be nice to know it's possible to get at least a few hundred years of healthy and happy living in. Yet, would the fear of the end grow even greater then?