>forgot what is it to be one.

Most adults seem to forget all their memories of their childhood, particularly if they become parents at which point they forget everything instantly.

I'm not sure why this is, what this phenomenon is called (if it has a name), and I would sincerely appreciate a scientific explanation if there is one. I still remember my childhood from about 4 years old onward as a guy in his mid 30s, so I simply can't relate to it.