My only 'fear' of death is that of missing the future. We live a life of expectations and discovery and desire that we are alive when they come to fruition. It causes a pang to think that one day humans may do this or overcome that and you may not be there to experience it. But then one realizes that this is the cycle of life. We are no nearer to immortality then we were ten thousand years ago (just a little longer lived).
This is why I think that so much stock is placed on longetivity through progeneration. Even though you will not live to experience these things, your descendents might. This is a good reason for long-term future planning and reduction of unneeded suffering. We impose our 'dreams' and aspirations on future generations so that they may attain the fruits which were not plucked during our lives.
I don't fear dying - it is inevitable and the causes are almost always unavoidable. I just dislike the discontinuation of experience. One has to reconcile oneself with that inevitability in order to reduce the stress it causes.
We should not berate ourselves if we cannot achieve, say, Einstein-level accomplishments in life. For it is in every action that we construct our future. Find the discipline with which you command the greatest skill and make your mark, as insignificant as it seems. The glossiness of history may not put a banner under your name, but you may impart some direction into the future that, even anonymous, adjoins you into history's unfolding.