My 6 year old loves the colorful Sunday ones... but he has me read them to him and I don't think for many of them he doesn't 'get it' yet. My guess is that the truly ideal age is around 9 or 10. That being said, I think there's no wrong time to introduce them.
I think it just keeps growing on you. Some themes in C&H are appreciated when you are older. Love and death. Friendship. Being kind to environment. Fakery in news...
