Is the following behavior moral :
1. I was robbed when I was 14 and 15 on the streets. It was only a few dollars and they only involved verbal threats and no physical violence but it was somewhat traumatic. I didn't report to the police because for whatever reason I can't still understand. Probably there was (1) a certain mistrust of the police's ability to catch such criminals and (2) not wanting to bother with the hassle of dealing with police work -- for certainly parents would be involved in a teenager's case, and my parents were busy people -- for what was so little money, and (3) the minimization of the potential effects of such a traumatic emotional experience; I was brought up to act manly and powerful, and "telling" seemed like weakness(why I don't know).
2. 15 years has passed and I want to find them and make them pay for the emotional trauma that I had to suffer for a long time afterwards. I still lack basic trust between people and so forth.
Is this moral? I.e. is the attempt at vengeance moral? Since if I don't take revenge either I am bogged down by social anxiety or become unduly aggressive against others who haven't done me wrong, but if I do it would at least be a temporary relief.