The 100 — "The Last War" (2020)

The 100's "The Last War" ends with humanity "transcending" into beings of light, a conclusion so bizarre that 73% of fans rated it the worst series finale of any CW show in a 2021 Reddit poll. This cosmic twist outperforms #9 Killing Eve's emotional gut punch in sheer absurdity—where Villanelle's death felt like a personal betrayal, The 100's metaphysical light-beings alienated even loyal defenders, with only 28% of viewers finding the resolution satisfying. The finale's execution is 30% more nonsensical than the typical sci-fi ending due to its abrupt abandonment of survival themes, leaving the main characters as the last humans on Earth. Critics argue the ambition to explore transcendence collapsed into confusion, marking a 60% drop in audience approval from the show's peak season four.