Word for the situation wherein you lose interest in life due to boredom [closed]

Do we have any word to describe the situation wherein you lose interest in life not due to tragedies but boredom and you want to quit life because nothing mundane or spiritual brings joy to you?

Ennui:

a feeling of listlessness and dissatisfaction arising from a lack of occupation or excitement.
_{Oxford Dictionaries}

In psychology, the specific symptom of depression that you describe is anhedonia.

Anhedonia is the inability to feel pleasure. It's a common symptom of depression as well as other mental health disorders.

WebMD link

The link has more specifics.

world-weary(adj.) or world-weariness(noun)

Tired of or bored with life, often with a negative or jaded attitude.
American Heritage Dictionary

Feeling or indicating feelings of weariness, boredom, or cynicism as a result of long experience of life.
Oxford Living Dictionaries

feeling or showing fatigue from or boredom with the life of the world and especially material pleasures
Merriam-Webster Dictionary

no longer finding pleasure in living; tired of the world
Collins Dictionary