Everyone has a desire, if not a need, to use their individual signatures. Whenever people meet to talk about a project, even stuffy old businessmen, they say they want to create something new.
The very rich and the very social are, often, the very stuffy.
I'm not a great fan of monarchy in general, but I have to say the Danish monarchy is closer to the people; it's not as stuffy as the English one.
Childishness? I think it's the equivalent of never losing your sense of humor. I mean, yes there's a certain something that you retain. It's the equivalent of not getting so stuffy that you can't laugh at others.
Respectability, regularity, and routine - the whole cast-iron discipline of a modern industrial society - have atrophied the artistic impulse, and imprisoned love so that it can no longer be generous and free and creative, but must be either stuffy or furtive.
The poem in which the reader does not feel himself or herself a participant is a lecture, listened to from an uncomfortable chair, in a stuffy room, inside a building.