Tone of Voice in Writing

When I blog here, I speak in the vernacular, or as appropriately referred to in gentler times. However, I’m noticing that when i write to people individually, particularly about personal matters, I get really formal. I like to call people “Ms.” this or “Mr.” that or “Professor” or “Dr.” because, hell, they deserve respect, we all do. That’s a little crazy wisdom i picked up on the street. Anyhoo, what do you think, does it come off as insincere, when a slang-slingin’ jokey kind of pop culture literate rock and roll guy writes letters like a high-collared 19th century intellectual? It’s just one of my habits. Maybe it’s annoying, maybe it’s amusing. If it does real harm, tell me.