Adoption is one of the most charitable things that one human being can do for another. Essentially, you're bringing up the biological child of another person. And you're doing it for no other than the reason that you want to and feel that it's the right thing for you and your family.
Raising children who are not your own is a big sacrifice and something that is entirely admirable in our society. It's also incredibly challenging to do and takes a lot of soul-searching, especially when you first commit. You wonder whether you're the right person for the job and what the dynamic will be like. You fear that there will be differences in how you treat your biological and non-biological children. And all that stress can ultimately take its toll on your mind. It's not an easy path.