The quote from Nick Hornby's "A Long Way Down" expresses a profound sense of emotional fatigue rather than an outright desire to end life. The speaker conveys feelings of weariness and disillusionment, suggesting that the excitement of life has diminished, leaving them feeling drained and unfulfilled. They don't perceive a reason to continue engaging with the world in its current state, feeling as if the "party" of life has overstayed its welcome.

This sentiment highlights a common struggle with ennui and existential boredom, where the individual feels they have exhausted all avenues for joy or interest. It underscores the idea that not all struggles with mental health are about despair; sometimes, they stem from a longing for a change and the need to escape a monotonous reality. The desire to retreat is rooted in the absence of inspiration or purpose, reflecting a yearning for renewal.