Adoption..

What is everyone's opinions on women who are fully fertile adopting? I'm currently pregnant but me and hubby were talking about adopting our next child. I'm fully capable of having children, but we want to adopt a child. My mother and uncle were both adopted and that is kind of pushing me towards adoption for personal reasons. We wouldn't be selective of age and we would most likely opt for a foster child. My mother is trying to talk me out of adopting. Not because I can have my own, but because she says adopted kids are "fucked up", for lack of a better term. She says she feels "thrown away" and she always wonders why her mother didn't want her. She says she doesn't want me to have to deal with that. I'm sure it isn't always like that, but that's one of the main reasons why I want to adopt.

Am I wrong for wanting to adopt when I could just have kids of my own? Is there some truth to what my mom said? What would you do?