My post from the other forum:
I think you answer your own question. "Innocence equates with lack of experience." While experience can and often is a good thing, it also brings challenges, effort, hurt and difficulty. It's not that people wish to deny their children experience but often they wish to delay it, give their children a little more time without the stresses and burdens that experience brings. What has been seen cannot be unseen, as the saying goes, so why rush children into a loss of innocence when life is a little easier with it?
I also think that having innocence around us recalls us to that point where we were more innocent, less burdened, carrying fewer of the cares of the world, and people enjoy that recollection.
In answer to your question: "You say that as if the bulk of experience we gain as we travel through life is negative. Is it? Is it really? Comparing myself as I am now versus as to when I was a child, I prefer being an adult who has benefited from the experiences I have been through."
I'm not suggesting that the bulk of experience is negative, just that experience, whether positive or negative, gives us more to ponder and carry through life. It clearly is an overall good thing, but it still takes work. Parents want their kids to have a little bit longer in life without that extra work.