Comics have had their share of tragedies over the years. Name a few of your favorites.
“Emerald Twilight”: Hal Jordan, unable to cope with the destruction of Coast City (and its 7,000,000 inhabitants), goes nuts and forcibly takes the rings of several other members of the GL Corps. He is able to bring the city back, but it’s just too much for one man, regardless of the power he wields. Ultimately, he loses out and the city is gone once again. This sends him over the edge and he loses his sanity.
He would return as Parallax and eventually becomes the Spectre.