Furthermore, who am I in this Universe? What is the purpose of my existence? Am I not just wasting the precious oxygen of this world?

This exactly sounds like my midnight intrusive thoughts...I like how you described his hopelessness and how it ended because, in real life, other people's advice won't solve our problem. It may help a bit; it may relieve the loneliness we felt, but it is always up to us on whether we fix ourselves or not. Thanks for sharing, @walindo.

Good day.