Pills and starships - Lydia Millet

In this richly imagined future brought by global warming, 17-year-old Nat and her hacker brother Sam are off to Hawaii for their parents' Final Week. The few who still live well now live so long that they must bow out by buying death contracts. Deeply conflicted about her parents' decision, Nat attempts to come to terms with her impending parentless future. Sam begins to discover cracks in the corporate rulers' agenda and eventually rebels against the company his parents have hired to handle their last days. Nat has to choose a side.