If you're happy to maintain a single user instance server and the additional costs and time that this incurs (as you are) then nostr doesn't really hold much additional benefit. You're blocked from less instances than either of the fedi bridges and you have a lot of mature mobile apps to use to improve your mastodon experience.

However, you can't deny that it *is* easier to create an npub and begin talking to the world and if you are connecting to someone elses instance and having to abide by their rules and blocklists and possibly getting blocked from talking to people due to others actions that isn't optimal.