Vernon, I think you've hit the nail on the head for why the terms annoy me. It's that emotional connection that the term "brother" and "sister" or "truth" have that makes me uncomfortable.
Mr. DJK, :-), I too have talked to an elder (damn it, errrrrrrrrrrr senior member in the Kingdom Hall) and I referred to him by his first name loud and clear. Like you, I felt so good in doing so!
Rubens