"Ever since I was a little girl and could barely talk, the word 'why' has lived and grown along with me. It's a well-known fact that children ask questions about anything and everything, since almost everything is new to them. That is especially true of me, and not just as a child. Even when I was older, I couldn't stop asking questions.
I have to admit that it can be annoying sometimes, but I comfort myself with the thought that "You won't know until you ask," though by now I've asked so much that they ought to have made me a professor.
When I got older, I noticed that not all questions can be asked and that many whys can never be answered. As a result, I tried to work things out for myself by mulling over my own questions. And I came to the important discovery that questions which you either can't or shouldn't ask in public, or questions which you can't put into words, can easily be solved in your own head. So the word 'why' not only taught me to ask, but also to think. And thinking has never hurt anyone. On the contrary, it does us all a world of good."

"Say "why not?" rather than "why?

The Five Whys is a method rooted in the behavior of children. Children instinctively think in first principles. Just like us, they want to understand what’s happening in the world. To do so, they intuitively break through the fog with a game some parents have come to dread, but which is exceptionally useful for identifying first principles: repeatedly asking “why?

Someone who is using a lot of fancy words and big concepts probably doesn’t know what they’re talking about. The smartest people can explain things to a child; if you can’t do that, you don’t understand the concept.

Whenever one asks “Why?” in science, one actually means “How?”. “Why?” is not really a sensible question in science because it usually implies purpose and, as anyone who has been the parent of a small child knows, one can keep on asking “Why?” forever, no matter what the answer to the previous question. Ultimately, the only way to end the conversation seems to be to say “Because!

Children have no use for psychology. They detest sociology. They still believe in God, the family, angels, devils, witches, goblins, logic, clarity, punctuation, and other such obsolete stuff. When a book is boring, they yawn openly. They don't expect their writer to redeem humanity, but leave to adults such childish allusions.

So many words to use. Oh do not say that words have a use.

In sum, the question “I wonder why?” is essential because it is at the heart of curiosity, and asking this question is the way to remain interested in the world around you, including your place in it.

Our malleable brains as children make us amazing learners, receptive to every experience and primed to take any shape our culture decrees. Think, for example, about how a child born in a multicultural home can grow up to speak two or three languages fluently. But it also causes us to take on all forms of childhood conditioning. Ever notice how often a child asks why? The typical parent’s response to the steady barrage of why, why, why is usually something along the lines of: “Because I said so.” “Because that’s the way it is.” “Because God wanted it this way.” “Because Dad says you need to do it.” Statements like these cause children to get trapped in a thicket of Brules they may not even realize are open to question. Those children grow up to become adults trapped by restrictions and rules that they have taken to be “truth.” Thus we absorb the rules transmitted by culture and act in the world based on these beliefs. Much of this conditioning is in place before the age of nine, and we may carry many of these beliefs until we die — until or unless we learn to challenge them.

A child’s world is fresh and new and beautiful, full of wonder and excitement. It is our misfortune that for most of us that clear-eyed vision, that true instinct for what is beautiful and awe-inspiring, is dimmed and even lost before we reach adulthood.

One of the things I believe most intensely is that every child’s why should be answered with care — and with respect. If you do not know the answer, and you often will not, then take the child with you to a source to find the answer. This may be a dictionary or encyclopedia which he is too young to use himself, but he will have had a sense of participation in finding the answer.

Bad language is a stage all children go through, and it dies with time when they learn they're not attracting attention with it.

why can't you see i'm a kid', said the kid.
Why try to make me like you?
Why are you hurt when I don't cuddle?
Why do you sigh when I splash through a puddle?
Why do you scream when I do what I did?
Im a kid.

So there’s an iron rule that just as you want to start getting worldly wisdom by asking “Why, why, why?,” in communicating with other people about everything, you want to include why, why, why. Even if it’s obvious, it’s wise to stick in the why.