It doesn't bother me at all, it is put there to be used. We have one at the office reception. It gives our receptionsit the opprtunity to work away from the desk confident she will be alerted by the bell should she be required.
Yes, I do feel a bit "demanding". I always wait a few minutes and give a couple of "coughs" before I ring the bell. I'd just rather not have to. However, I have a girlfriend of many years and she can't help herself, she rings the bell even in there is someone in attendance and staring at her. She is mentally challenged by important things like a bell on a counter being underutilised though.