Not at all.
I did lose several close friends from childhood as a result of my addiction, it would be great to see them again now that I'm sober. At the same time my recovery is the absolute number one in my life. I can't be looking backwards, only forward to what lies ahead.
If it is meant to be that I cross paths with these people in the future I would welcome it. If not then I will still continue on my path with my head held high. No time for tears or regrets for me.