You sound like me. I've always wondered how the hell do people tell all these stories about their life in such a great detail, while I was struggling with remembering what I did yesterday. Then I learned that I have aphantasia. It was a mind blowing discovery, but it didn't affect me much, I just found it to be an interesting topic to think about sometimes.

Then, I found out about SDAM, and I was utterly devastated. I basically don't have memory when compared to other people. I can learn knowledge about something, but I can't actually remember anything, because for other people, remembering involves "re-living" that situation almost as though as if it was happening again.

SDAM stuff completely drives me crazy, as I feel that I'm missiog out on a something that is fundamental to the human life. So I just try not to think about SDAM further, and pretend that it's all a joke and everybody's experience is exactly as mine.