Everything. I simply miss everything from my childhood. I miss thinking Battle Creek, Michigan was some mystical, magical place where all sorts of goodies came from in 8 to 12 weeks after sending in 5 box tops and $1.25 for shipping and handling.
I miss the Silver Age of comics and waiting for each new month's comic to come out.
I miss being amazed by each new television episode of Star Trek, Lost in Space, Voyage to the Bottom of the Sea, Time Tunnel, The Invaders.
I miss the space race, putting men on the moon, free love, hippies, Woodstock, waiting excitedly for your favorite band to release a new album, going to a book store and being excited about all the new releases.
Milk delivered to your doorstep.
I guess I miss most is the feeling that everything was new and exciting, and even simple things gave me a thrill and you could make friends in a minute just by playing with them in the park, swinging on a swing, climbing a tree, playing tag, without ever once asking what their religion or politics were.
That's what I miss, a life full of life, filled with fun and imagination, free of adult responsibilities or worries.