I love love love everyone's responses, I think they are all full of words of wisdom. Regarding questions about religion, death, the meaning of life, etc., I've found through trial and error with DS 6 - who started these questions a little before age 4 after the death of a close adult friend of ours - to be honest about what I believe, but how no one really knows, how others believe a variety of different things, and how we think and talk about these things and figure out what we ourselves believe.
I used to provide too much information, which didn't help. Now I provide my thoughts on his questions, but don't go into detail about things he didn't ask. He will keep asking till he's satisfied or ready to revert back to being a regular 6yo.
If your DS has tendencies in the future like your DH did when he was a child, there's another thread on here about a kiddo having problems sleeping at night because of anxiety about death, and a great recommendation from someone about "mindwsiper" books - simple books you read before bed that help swipe the mind clean. My DS6 now occasionally asks for mindswiper books when he needs them at nighttime, it's a great tool.
I completely agree with all those who have encouraged you to let your DS go as far as he wants with his activities, and I also agree with the pros of this for future placement in school. My kids would not/will not do one ounce of anything academic at home. So I've followed their lead and I don't push them, even though I know their capabilities. They figure things out in other ways. If your kiddo loves workbooks, I agree with others who recommend following his lead.
