Do you begin every reply to a question with "So,...."?

I wonder why.
Seems like a relatively new [invention?] because I do not remember listening to people begin the answers to questions with "SO....Blah, blah..." when I was in elementary school or college.

I suppose we could leave Comments that include the names of people we know who do this just in the wild chance that they end up being aware of themselves through your investment in posting.

Question: Who does this over and over again?
Answer: So, I don't begin each answer with "so"; but I hear an unusual percentage of people that do talk this way - particularly people in San Francisco and Silicon Valley who are trying to describe their companies, but also in and around New York City. I admit I spend a significant about of my time in northern California, so thus the skew in my observation.