If you value decentralization, censorship resistance, and open protocols then Nostr i where its at. If not, then you probably won't dig it. Nostr is really a protocol not an app. There are many apps that use the protocol and many more will be created. At this point the application of the protocol that is getting the most attention is the twitter like apps. It is in the very early stages. I believe it will be much bigger than Twitter ever was but it may take years for this to happen. After all Twitter was mostly nerds like me in the early days.