I don't think that five is early. I think that's about the time that I figured out that the sun would eventually become a giant star and either eat the earth or burn the earth to a cinder.
I think that my existential anxiety/depression peaked around 18 or so and lasted through most of my early 20's.
What about telling him that you don't know the answer if you don't know the answer?
And about the questions that *do* have answers, the answers depend entirely on the question being asked, being that a materialist question/answer is quite different from an ontological/metaphysical question answer.
I figured out early on that my parents weren't going to be of any help with any of these questions, particularly with respect to cosmology, so there was no point in asking them and I was on my own.
