On Suicide.

A man who retires from life does no harm to society: he only ceases to do good, if it is an injury, is of the lowest kind. All our obligations to do good to society seem to imply something reciprocal. I receive the benefits of society, and therefore ought to promote its interests; but when i withdraw myself altogether from society, can I be bound any longer? But allowing that our obligations to do good were perpetual, they have certainly some bounds; I am not obliged to do a small good to society at the expense of a great harm to myself: why then should I prolong a miserable existence, because of some frivolous advantage which the public may perhaps receive from me?David Hume (1777) On Suicide

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It is the ultimate and absolute evil, the refusal to take an interest in existence; the refusal to take the oath of loyalty to life. The man who kills a man, kills a man. The man who kills himself, kills all men; as far as he is concerned he wipes out the world. His act is worse (symbolically considered) than any rape or dynamite outrage. For it destroys all buildings: it insults all women. The thief is satisfied with diamonds; but the suicide is not: that is his crime. He can not be bribed, even by the blazing stones of the Celestial City. The thief compliments the thing he steals, if not the owner of them. But the suicide insults everything on earth by not stealing it. He defiles every flower by refusing to live for its sake. […] When a man hangs himself on a tree, the leaves might fall off in anger and the birds fly away in fury: for each has received a personal affront.

G. K. Chesterton (1908) Orthodoxy

Why David, should one prolong a miserable existence? Flowers.

Live for the sake of the flowers.