Maybe it's just me, but I would definitely want my stuttering to go away. Wishing for hardship to stay with you because you get to "overcome" it seems like roundabout logic to me. And saying "but wait, you could have cancer" isn't helping anyone. I would rather have some curable form of cancer than stuttering frankly, at least that hardship would be temporary until it goes into remission. You don't have to be yourself up over it, but I don't think saying that you wouldn't even want your stutter to go away is the answer either.