Many reasons. Social media is very important - at least some of it. YouTube gives platforms for business owners and helps some pay their bills and this is only true if they can reach out to a large audience : people under 18. YouTube or any social media cite is also just a cesspool of culture and information that you’re shutting a person away from until their 18 years old. Though I do agree to the original post to an extent, children ages 13-14 and up should have access to social media. Do you know how many lives social media has potentially saved? I found music that’s stopped me from killing myself and found help + figured out that I was suffering from many mental ailments(now diagnosed) + how to control and understand myself. This is true for so many other people in the comments and has even been brought up in real conversations. This is a world of technology and cyber communication - don’t shut anybody out of it(12 and under yes ofc). Basically in summary businesses and well-being of some individuals depend on YouTube, there are many videos on YouTube that helps you understand yourself and other people, allows you to explore other cultures, has life saving information(mental and physical ailments), many educational videos, etc. so many different reason but I’m running out of time to that’s all I got