I noticed the first few seasons of TNG and TOS had a heavier dose of utopia descriptions.
I don't think these ideas are worse or bad ideas, but a question of how realistic or rational the ideas are.
According to TOS, future humans don't get angry at insults anymore at all. They don't fear words.
The Neutral Zone (TNG), claims 24th century humans don't fear death, they're much more evolved than that.
Then you have the no need or want in the 24th century--humans had 'grown out their infancy'.
That sounds like humans are living in a virtual Eden getting all their needs provided for free.
And Starfleet is not the military- it is an exploration vessel that carries families and children, but will take care of military duties if necessary--with the children on board.
Is it realistic or utopian, or both?