OK I can add to this. From own experience in two cases, if you are open to suggestions.

So, in psychology as I understand it positive memories outweigh negatives ones since for the average person negative memories get sort of padded and fade.

I’ve always wondered why people tend to go soft with negative experiences and the longer it has been the more harmless it was. I’ve seen this first hand on family and friends and partly had to remind close family what someone else did and when reminded they snapped back to their original attitude, so to say. But they would’ve forgotten the emotional impact.

So why has it always been so different for me? I found out I am an Autist and this seems to be one of the core differences. This imo also relates to why we don’t really forgive if certain thresholds have been crossed. And of course, the world view is far more negative due to the retained memories including emotional remembrance.

The second case is too much for one post, so let’s leave it at that for now.