I think it's different for everyone to be honest, my stutter isn't as severe as a lot of others that I've seen on Youtube, documentaries and what not, but it's still there, the thing for me is that, if I'm in a conversation and I'm having a little difficulty getting a word out, I would be rather angry if the person I was talking too tried to finish my sentence for me. But I think it depends on the situation at hand to be honest with you.