I changed my last name when I turned 18. See, my mom got pregnant with me at 21 in college by a one night stand (aka- piece of shit sperm donor). She had to drop out to support her and her new baby son because the guy (I know nothing of him, not even his name. Not that I would want to anyways) ran off when my mom told him the news. When I was born, my mom gave me her maiden name because that was hers at the time.
Then when I was four, my mom married the man I call my dad. To me, he is my one and only dad and I love him to death. We were really poor when me and my older sister were growing up so my dad never had the money to hire a lawyer to legally adopt me. So on the day I turned 18, I went to the courthouse and legally took his last name myself, with his permission of course. It was one of the proudest moments in mine and my parents lives.
I went by his last name since four but it wasn’t official until I had it changed. So as you can guess, I think it is awesome that people can change their names.