By now I'm quite happy to use Nostr only for public content. Happily uninstalled Twitter from my phone a while ago and no regrets.

For public groups, say as a replacement for telegram chats, it seems a little less practical... but any group larger than 20 people is basically a public channel anyway. No privacy resists 20+.

DMs on Nostr are improving, but they are still clunky. Especially syncing between different apps.

Whatsapp is the final boss to beat. I'd really like to not use any META apps... but the network effects are huge. Too many family, friends, work contacts are only easily accessible via whatsapp.

For that we still need to improve Nostr group chats, dms, etc... hopefully we can manage it in 2-3 years.