I'm going to go ahead and say yes.
As a 24 year old, I still collect Batman figurines, I have a slight interest in Pokemon and the biggest thing is that I can be pretty naive. I see the world through a child's eyes still. I look up in the sky and I don't see clouds, but animals and pirates lol. I love stargazing, appreciating the moon and the stars. I look for the best in people, even if I know that it could possibly not be found.
I'd say that I'm the perfect balance between mature and childish.