If he serves the role as your father, why not make it official?
It will depend on the laws in your location. There are places where adult adoption is common. It often has to do with inheritance rights.
yea, but it barely happens
yes because he knew that he was gonna be a lozer son
No. An adult cannot adopt another adult.
no you cant but you can adopt a child
No, in order to adopt someone elses child the parent have to give up their parental rights or the court have to take it from him.
now a stepfather can't adopt a child without the concent of the child's father
Yes
Where to find a female to adopt in Seattle
"Allow?" It isn't the children's responsibility to control their stepfather. Afterall, the stepfather is controlling them. They probably don't know what to do and are trying to understand what is going on.
highly doubt it you need to be an adult to adopt
Marriage.
First of all at 20 they are no longer a minor. They became an adult at 18. So, you don't adopt an adult.