I was adopted as an infant. I have no idea why my birth parents put me up for adoption nor do I care. My adopted parents were and are the best. They told me when I was 9 years old and I didn't have a problem with it. They gave me a wonderful life and I have no desire what so ever to look for my birth parents.
That being said I would love to adopt a baby or an older child. I wouldn't care. I would love to give a child all the love that my parents gave me. But already having 3 of my own and getting up in age I don't know if I will or not.

Af's I say go for it when you feel you are ready. And I applaud you for wanting to do that.