How does Beckett's construction of his metaphors reflects his own age in Endgame?

What is key to realise
about the work of Beckett is that it is linked to a  literary movement entitled the Theatre of
the Absurd. This was a literary movement that questioned the value of life itself and proposed
that life is actually much more bleak and depressing than we would believe. In particular, works
that are attributed to this literary movment try to make the audience see that life
is...