To help you cope with the heartbreaking knowledge that the villain actually got away with their insane plan for once is writer Brandon T. Snider and his YA novel, Avengers: Infinity War: The Cosmic Quest Volume Two: Aftermath.
The book is a follow-up to April's Avengers: Infinity War: The Cosmic Quest Volume One: Beginning and revolves around Dr. Erik Selvig (played by Stellan Skarsgård in the MCU), detailing what he was up to after the events of Infinity War. As it turns out, he becomes part of a group of eggheads known as the "Science Avengers," whose sole goal is to find out just what the hell happened to half of humanity.
Most interestingly, Snider provides a name to Thanos' deadly Infinity Stone snap, "the decimation" or "the decimation event," a phrase coined by Selvig within the story's narrative. As Comic Book Resources points out, the title is similar to the events of the House of M storyline in 2005, where Scarlet Witch (Wanda Maximoff) erased all mutant abilities from existence. This, too, was known simply as "Decimation."
In the novel, Selvig tracks down Jane Foster, who he believes can help solve the mystery of "the decimation." Indeed, her working theory is that it was triggered by all six Infinity Stones working in unison. Since we now know that Jane survived the snap, how cool would it be if Natalie Portman returns in the next movie to help save the universe?
With the fourth Avengers still without a title, Avengers: Decimation is as good a name as any, right? The film opens in theaters May 4, 2019.