Sure you do. Most people don't want to know about file formats. Neither do I honestly. To people who have been using the ribbon toolbar (newer versions), OO feels like going back. And sure you can give it to your parents or anyone else, especially for home use. I did say it was perfectly fine.
Everyone hated it originally. Now people like it. It's just like most changes. I haven't used it much myself. I usually use Open Office.
Sure, setting is a possible "solution" but that implies there is a problem. Most people will do fine with it but most people probably also just wish their son would just install pirated Office for them like their neighbors.
