Anti-Humean intuitions

I asked my six-year-old for an example of a bad reason for an action. Answer: "Someone wants to do it." A good reason: It's right and you know it (or something like that—I don't have the wording quite right).

I asked him if the fact that something is fun and harmless was a good reason to do it. He thought it wasn't, because it could still be a bad action. I asked him if the fact that something is fun and not bad was a good reason. He thought it could still be harmful to you. So I asked if the fact that something is fun, not bad and harmless was a good reason. He said it's neither good nor bad.