In Milan Kundera's "The Joke," the protagonist expresses a deeply optimistic perspective on life, despite the challenges and negativity that often surround us. He acknowledges that while there are many things to complain about, he chooses to focus on the beauty and marvel of existence instead. This attitude reveals his rejection of the pessimism that can taint one's experience of life.

The protagonist's appreciation for a remarkable day, particularly in a strange town with someone special, highlights his commitment to cherishing the moments of joy. This celebration of life stands in stark contrast to the "killjoy pessimists" he criticizes. By choosing to embrace the marvelous, he advocates for a more positive outlook that values the present and the happiness it can bring.