Not feeling like a closed-source algorithm is attempting to influence my thoughts is definitely nice.
I enjoy the ability to transition between clients while maintaining my follow and follower list, regardless of the type of user experience I prefer (e.g., Amethyst).
The ability to send real money to anyone who has a lightning address, without knowing who they are, their location, or asking anyone for permission, is amazing.
Nostr is amazing, and I can't wait to see what its future brings.