People getting the issues live in different systems and/or have different needs, and it also changes with our world getting more digital. One part that doesn't much depend on locality this days would be international travel and money.
For international travel, small kids having a different name is surprisingly painful and can get you stuck in an office for hours until it's somewhat clear you're not kidnapping them (proving you're a parent not being enough). Depending on how it goes your plane could be gone by that time.
Money is the same, there;s a lot less check if you send to yourself or family than to a random stranger. Having a different name can mean your transfer getting stuck for days of back and forth.
Then again, if you're just staying in your town never dealing with anything outside of it, you might never have to think about your name in your whole life.
