Glass half empty way of looking at it. I think it gave him empathy, As with other events in his life. Also, since he's had the stuttering before he became a politician, he had to factored it in. He certainly would not have became a politician if he didn't have it mostly under control. He's never been good at debates so he overcomes it with retail politics. But I understand where you are coming from. People will never understand the impediment... And it is a shame for the rest of society....