[acituan]

Not meaning this in an derogatory manner but this sounds to me something like what Peter Pan wanted. He didn't want to leave neverland and he wanted to be everything (pan). This is also well studied in the Jungian psychology under the term puer aeternus, the infinite child.

The problem with this is, personal harm it causes aside, if all adults wanted to be infinite children, it wouldn't leave space to (at least compete with) the incoming, actual children. It would cause great intergenerational conflict. Not leaving resources for the next generation also means endangering the continuity of species altogether.

If we take a step back, one might even argue that this is already what is going on today.