For what its worth I don't believe you have to have the "addiction gene" to become addicted.
technically to become addicted you have to have the addiction gene so my question to you is there any history of alcoholism or drugs in your family? i am not sure about adderalls withdraws but i do know about methylphenedates withdraws i can tell you that the withdraws from adderall is really not that bad especially if the doctors wein you off like they are supposed to. and you know waht the withdraws are like you went through them when you stopped taking them. thats how they will be most likely.