Why are kids asking why?

I don’t know, but what I know is that having my kids starting the why period brought three interesting thoughts:

1. I really understand the power of the Five whys
2. It gets annoying after 3 whys and very annoying after 5
3. It is very powerful to formulate answers that a 3 year old will understand (kind of)

Note: the less I am able to answer the more annoyed I get, so maybe it is proportional to the ego