Look, I am not a parent, but my mother has stuttered in the past and, sadly, it could be passed down. I always think in upsides and downsides. Yes it will be hard for the kid sometimes, presentations in school are sometimes a nightmare. But I've learned a lot of things from it too. You will easily see which friends do really care about you, because they let you take your time. You will become great at observing and seeing the real image. You won't be easily affected by stupid things others say, due to the fact that you know yourself better than anyone else. And a guiding parent who has experienced it all before can really help with it all. You do have to give him freedom though, sometimes talking about stuttering could become annoying lol. In the end, I think a parent who stuttered too could really help a kid going through the same thing, and bond with the kid.