People are so opinionated about things, and they don't even know what they're talking about, or can't even do it themselves.
Like anything, you don't force kids to cook. It just becomes part of life - have them be around it, keep them informed - talk about it. I try to relay my passion for it in these ways. The second you try to force anything on your own kid, they rebel.
Writing is writing, and stories are stories. Perhaps the only true genres are fiction and non-fiction. And even there, who can be sure?