why do children leave home from good parents, but don't write or call much?

[pattersondebra]

Has nothing to do with the parenting, it's normal for a child to get wrapped up in a different life style and eventually will start calling.

[lgemini]

They want to feel they can live without help from the parents.  There is nothing wrong with that.

[tfw6693]

Sooner or later the child needs to leave the nest. When they are older and have children, they will return with a gratitude they haven't had before.