comment: >
  
  You can do all that. Lawyers can help you name people for these exact purposes.
context: There is, it is called Adult Adoption. >
  
  Lemme ask my friend if i can adopt him >
  
  Just putting this out there, but if there is some rich person who wants to adopt an adult daughter for inheritance purposes.... I am here :p
  But yeah, it is pretty rare, and I think it is typically for legal issues such as leaving your money to non-family.  
  There was also a movie that had this theme.  Music in my Heart with Tony Martin. >
  
  If said rich someone also wants an adult son I am here! >
  
  Gonna be honest, it depends on how rich this someone is...
  If they are rich enough, hello brother! >
  
  I'm actually pretty into this.  Unexpected opinion I hadn't thought about,  but absolutely agree with. >
  
  Never had this thought but I’m with you, I’d really like to be able to legally add someone to my family >
  
  You can adopt adults.
  This was how some gay couples gave survivorship rights to their partners before the legalization of domestic unions. >
  
  “Alright fine, but on paper I get to be the dad!” >
  
  *daddy >
  
  Have your parents, or you, adopt them. I believe that adults can be adopted. >
  
  They can indeed >
  
  In what realm would this benefit? And can you make someone not part of your family? >
  
  Let’s say I have someone who I’m extremely close with, like a brother but not by blood. I want them to be able to visit me if I get hospitalized. I want them to be able to make medical decisions if I’m not able to. I want to be able to take time off to visit them if they get really sick (some jobs only allow this for family).