Let me try to change your mindset about your stutter. If you heard a confident person speaking on the phone ( lets say barack obama), and you start hearing him stutter on few words. Despite his occassional stutter and blocks, he continues to speak in same calm and conffident manner. His listener probably notices that too, but they're still getting the information they need from obama, so they probably dont care too much about the stutter. Now imagine another version of this obama, that is equally confident while speaking. But when he starts stuttering, you see that he starts getting flustered and embarassed, and his voice starts breaking because he's losing his confidemce. Eventually he starts fighting anxiety, forgets what he's meant to speak, or worse starts using replacement words and changes the meaning of the conversation completely.....yada yada. The listener is now mad because obama is basically not making any sense. Given those are the only options that you have at that given moment, which obama would you rather be?