Human emotions are totally normal. Honestly, I don't necessarily get the "numb" feeling that most people in DP/DR get. My emotions can range drastically from one day to another. I have moments when I'm severely depressed and can't do anything but break down and cry. I also have angry outbursts and just feel very pissed off, for lack of a better word. For me, and it could be for you too, we're living with such severe anxiety that it's almost normal to be angry/depressed.
I liken it to an abused dog. Abused dogs often have anger/depression issues. They are so beaten down and live in such anxiety of their abuser that they just become angry/depressed because of their circumstances. In a way, we're all beaten dogs and anxiety is our abuser. Anxiety from DP/DR and other mental health issues have beaten us all to a pulp and for me, it's left me feeling bitter, depressed and generally pissed off. Many times, we're all a bit bitter...like, why is this happening to me?! I think once we're all able to get out of this anxious state fully, we will be able to relax and enjoy life and not be so damned bitter or depressed.