What people should care about is the integrity and consistency of the data they're storing. RDBMS do an extremely good job of generalising this problem with rea

What people should care about is the integrity and consistency of the data they're storing. RDBMS do an extremely good job of generalising this problem with reasonable performance, which suits the majority of real world problems. The ideas behind it are understood by most of the industry. It should be the default choice (or plain filesystem storage), unless you have a specific requirement for something different. In the latter case, this should be people who are well informed about the database choices they're making.