This is the question posed by The Joyners in 3D, a scifi comic written by R.J. Ryan and illustrated by David Marquez. Set in 2062, the graphic novel examines how a family tragically tore itself apart. To tell you more would spoil it, but you can watch this awesomely intriguing trailer for the comic, due out this fall from Archaia.
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That trailer... doesn't actually explain anything. If it's trying to sell the book, it should maybe say something about the book rather than just telling me who's doing it and showing me their confusing work-in-progress sketches.