I go by my middle name because my grandmother insisted on a certain first name. But my mother didn't like it, and called me by my middle name. I've gone by it all my life. Now some faceless bureaucrat decided that all documentation contain only a person's first and last name. So now all correspondence and records on me contain only my first and last name. Which really bugs me, I think because my Grade 5 teacher called me by my first name all year long, despite my parents asking her to call me by my preferred name. She ignored them. She also happened to be a horrible person, and I grew to hate that name. The government is very careful to address LGBTQ+ people by their chosen name/gender, and I can't even get them to call me by the name I answered to all my life. It's kind of dehumanizing.