He is sentenced to die, and the only thing he hopes for is a big crowd at his execution, because that will give his life some closure and meaning. It is a sad commentary about an equally sad and empty life. In conclusion, "The Stranger's" theme is both unsettling and completely clear by the end of the novel. Camus feels life is totally meaningless, a bleak assessment for most readers, and he illustrates this meaningless existence with Meursault, who is completely devoid of sympathy and feeling for anyone but himself. It is difficult to mourn...

He is a man destined to die not so much because of his actions, but because there is no other conclusion to life, according to Camus. The theme of this novel is dark, and the symbols and devices Camus uses all help build up that feeling of darkness, unreality, and lack of meaning. It is a dark novel that stays with the reader long after the reading is done.
References

Camus, Albert. The Stranger. New York: Vintage Books, 1946.