You did what you thought at the time was best for separating you from your abuser and the abuse itself. Most of us have something we regret doing in the past as a result of our abuse but I am sure the fact that you have to look at your penis every day might server as an unwelcome reminder of your loss. There is plenty of argumentation going around concerning circumcision in general but concerning your own experience I want you to remember you were trying to excise your abuse/abuser from your mind. Your decision to get a circumcision in no way makes you complicit in the decision of your abuser to hurt you. You were merely, understandably, trying to escape the abuse from what I have heard.
"Life is like this dark tunnel. You may not always see the light at the end of the tunnel, but if you keep moving, you will come to a better place." ~ General Iroh