We are all of ourselves from day 1 and we're "cumulative"; one doesn't learn to walk without crawling first and just because crawling is no longer "needed" doesn't mean it is not important to our development and who we are today. Whether you want to explore remembering what your life felt like when you were 5 or not, have "déjà vu" where you wonder when you might have seen/felt/experienced something before or wonder how crawling was helpful to you before and may help inform your life today is a wholly personal decision, not controversial at all. My brothers (all older than I do) do not remember their childhoods much but I remember mine. Who knows/cares why? I do and, for me, that's all that matters.