Yes @meowgan, I think your thought about our dreaming lifetime hits the core of the issue: so many hours of our lives are spent in a world and a state that we don't understand at all. And that's what brought me to the reflection: how is it possible that we don't give importance to something which is so present and needed at every day of our lives? If it's part of the human life (and such a relevant part), we should care more about it.
That's good, my friend. Learning a family of languages certainly will boost your linguistic abilities. I will soon post some guides about the creation of memory palaces. I hope that will be useful for you in your learning of languages.