Death is a natural thing. It is part of the life cycle, and yet we fear it because we are afraid of the loss of those we love and we fear our own extinction.
The ego fights for its survival. It cannot see beyond it's own interests. It fears its own demise, and yet we intuit that there is more to us and more to life than our own egos. We have learned in many instances "to rise above it" and let the ego's instincts dissipate. We have learned to empathize with the experience of others which requires us to transcend our own ego and put ourselves in some else's place. There are many ego deaths every day if we are aware of them.
Death is the letting go of the ego and dis-identifying with our body and going on into the great beyond whatever that may be. It is our final destination of the journey here on earth and it is a transformation which we can only guess at.
We are told by spiritual masters like Jesus, Buddha, and others than death is nothing to fear. It is going home to the place from which we came, the mystery of God.