prepare for death?

I got only one question now, what life is? Yesterday my cousin, cousin passed away. When I'm in school my friend told me that her aunt had passed away today and when I reach home my mum told me that Lydia Shum had passed away too. Though I don't have any relationship with them I still feel sad for their death.

What life is To live, go to school, work, and die? It really bothers me a lot. I'm afraid to die and all those people have left the world had let me knew that I might die anytime!

Some time I wonder life may actually not exist, it might be our illusionary

Anyway, what makes sense to me now is life is to prepare for death, to simply live until one dies.