Why do I barely have any memories of me as a child?

I always hear about people who have the best memories from when they were kids. I can't remember much. I remember very well the day I went to meet my little brother at the hospital when he was born, I remember not liking school, I remember being bullied but that's pretty much it. If someone asks me the best memory of me as a child I can't think of anything. I wonder if something happened to me that made me forget everything.

Why do I barely have any memories of me as a child?
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