Comics, and the broader Science Fiction and Fantasy genres, are often best when they present a story that is more than just the surface action. The top level story can be enjoyed but there is a satire element that is underneath for those that are able to understand. The X-Men have frequently have underlying themes of race and social exclusion. It is almost cliché at this point for superhero stories to really be about what it means to want to fit in.
Vision is not a character I am familiar with. I never got around to seeing Age of Ultron, so I did not see his movie introduction. And I have not previous read any of his comics. But I poked around a little bit for enough background to understand. Vision (as I understand it) was created by Ultron to be a synthetic human. Vision turned on his creator and jointed the Avengers. But like many synthetic creatures in sci fi history, we as human assume that the perfect physical being really wants to be like us, a limited human.
In Little Worse Than a Man, Vision has created a family. Vision, and the members of his family are synthetic humans, but required the brainwaves of a particular human to give them personality and emotion. Vision’s brainwaves were taken by Ultron from a human (and that human’s brother became The Grim Reaper in order to kill off Vision to avenge his brother.) Where the brainwaves for Virginia (wife), Viv (daughter) and Vin (son) came from is not revealed in this book.