I've been using BTC for a while. I've been using it at exchanges, to trade altcoins and to order goods over the Internet, but I've never exchanged BTC with someone in front of me. At a store or between friends, or family. This despite having had long conversations about BTC with various kinds of people, and attending a few meetups.
Who has exchanged BTC F2F?
I once had a one to one exchange, but that was with someone whom I know for the past few years. I would never do a one-to-one exchange with a stranger. I have heard so many horror stories related to it.