just like i said in that thread that it is not necessary for everyone to reproduce because there are a lot of children in the world that needs attention but they are getting less or no attention and when you go to Orphanage homes you see so many children living unhealthy lives when these children can be adopted and taken care of by the society but they are left to their own fate and most of them grows up with a wrong narrative about the society, they feel isolated, dejected and rejected without parents to look up to, we should concentrate more on taking care of children and make sure they have a good understanding about the environment they find themselves instead of bringing more children to the world.
I don't think it's normal for someone who is capable of reproducing to decide to adopt a child, I've never seen that before, you have whatever it takes to have children but choose not to because many children are looking for someone to adopt and care for them, all that I've seen in my life unless the person is unable to reproduce and decides on adopting a child or they adopt when they don't want to give birth to a lot of children.
Will you care for someone else's children while you fail to have your own? Do you believe you may have the same feelings as if you were caring for your own children? There are many orphans out there looking for safety but no one to care for them. You mentioned that everyone does not need to reproduce, but would you be okay with someone you did not bring into this world achieving what you have been working for so many years? I doubt it.