Indeed, it isn't about me at all, it's about my dog. Running free it can avoid nasty dogs, idiot humans (e.g. cyclists who ring their bells at her) etc. I have poor balance as a result of a stroke and don't want to risk a jerking lead in such circumstances.
Zetti will be 8 next month and since she was a puppy, has never jumped up on anyone. She will either ignore you completely or - if she considers you a potential source of food, will sit down and attempt to stare you into providing it.
I have every sympathy with those who are nervous around dogs, whatever the cause, but it is not my fault.