Tree houses are one of idyllic childhood symbols. A special place, away from parents and school, that is just your own. It’s not hard to see why it’s an idea that’s persisted for generations. But actually building the tree house isn’t kids’ work.
Trying to fill in someone else's shoes is futile. The person will at best be a shadow of the one who shoes they are trying to fill. It is best to have new shoes (their own) rather than live in the shadow of another