I'm not >>10967348
, but I also like the innocence a lot.
Part of it is just plain cute; the embarrassment and lack of knowledge is just cute. The other part is being able to be there for someone's first time - they are not comparing you to anyone else, you get to help them out and teach them things, etc.
Of course, innocence CAN theoretically be found in someone past puberty, it's just becoming less and less common. Prepubescents will always have that innocence because their body isn't exactly telling them to go out and have sex yet.