hahaha. You forgot to mention the Easter Bunny! Yes actually I DO allow a little magic into their childhoods as I had in mine. :)
Thats different IMHO from answering serious questions about how things work, what things are, why things happen. Again, I agree that they dont need all the details and all the info that my son got....but the truth can be simplified to age-appropriate degrees i think.
I don't blame you because you didn't give the detailed info to the kid, he got it from someone else.