I haven't either. I get a lot of people who claim they have a stutter (often from just stumbling over words sometimes, like everybody does) but ive never met someone with an actual genuine stutter. When I was in 3rd grade, my speech therapist actually brought me to a stuttering convention. It was so much fun and so helpful to see that I wasn't alone rather than just hearing it. If you'd like to meet other people who stutter, I highly recommend it!