Interesting. And no, I'm not a lady, but I see your point.
Consider this, then: At the request of a dom, should a sub--even one schooled in Gorean philosophy and the like--*not* call a dom Sir? This has happened to me more than once and I have been scoffed at by telling subs not to call me Sir. It seems to me that they cannot truly respect me because they do not know me, and I thus find it nothing less than insulting to be presented with such a sugar-coated falsehood.