I wish more people thought this way. Why does the language you choose have to be your religion and lifestyle, when it’s just a tool? They all have flaws and areas they are useful in.
For many folks, because it means which kind of job they are able to land, with which people they hang around at least 8h a day, what they talk about, to which conferences they go if any, and so on.
People do this with all sorts of things, but ultimately want validation that they made the “right” choice. At least that’s the most charitable assumption I can make.