anyone feel their creativity is lessening as they grow?

[The Architect]

I don't have this issue, and I think the reason is that I read a lot, especially fiction. One's imagination doesn't exist in a vacuum; it needs stimulation. And movies/TV shows aren't enough, because they don't engage one's mind in the same way books, or even some kinds of games, do. (And reading is especially good for stimulating one's language faculties, which would specifically help with finding the perfect level title!)