Why are these words so important?

My four-year-old friend, “I want to talk to you on the phone.”

My six-year-old friend, “It’s OK to make a mistake.”

My ten-year-old friend, “I remember when we came to your fish pond and we named the fish. One was called tie dyed.

My 27-year-old nephew, “Awesome!” “I think it will be fun.” (to walk 100km with me in Spain, just the two of us.

Why is it important to be sought after, respected, honored and remembered by those who are young?