What is Death?

What is death,
is it life over again?
Who is the grim reaper,
does he really cause pain?

When will we die,
can one ever be sure about it?
Does it matter how smart,
or if you have a sharp wit?

Why are we afraid,
of death at its worst?
Why are we always so sure,
that the old people mostly die first?

Have you ever wanted to die,
because of the pain you couldn't bare?
So why is death still,
something that we all fear?