Well, have you ever got frustrated of having multiple accounts for social media? Your followers on one platform don't follow you everywhere and you need to create a new account and content and following for every platform? Well Nostr is social media except you get one account that you can use on YouTube, reddit, Twitter, Instagram, etc, and all your content, likes and followers come with you everywhere. In fact you can take your profile wherever you like, be anon if you want, and no one can ever deplatform you or censor or ban you or stop you using it in any way at all. You never risk losing your account, and all your content and followers get to stay with you for ever no matter what.