@me @gnusocialjp @Suiseiseki @gentoP as a native English speaker, at least in my part of the world, I do not know of any native speaker who speaks formally, save perhaps high church services, yet many of my non-native speaking colleagues speak very formally, including many words and phrases that I have had to look up to learn what they mean. Granted many of my colleagues are Indian so one could argue whether or not they are native speakers. My understanding is other regions of the world may put significantly more emphasis formality than where I live.