Pro: people can say whatever they want and you can't stop them, only mute them.
Con: see the pro if you're the kind of person who thinks you have to police what other people say.
Nostr is still growing. It's still clunky. It's still young. Not many people use it daily. But it's here and it's innovative and it solves the problems of traditional centralized social networks and applications. I hope you enjoy it here.