I feel like Nostr is neat in theory… but all it’ll do is bolster and embolden hateful people who want to spew their hateful views onto the net. I prefer the Fediverse. The glory of that is that you can literally go find an instance where somebody shares your views… or even better make your own! Zero censorship! You’ll probably get black-listed by other instances though.
I haven’t deleted mine, but I no longer visit the site. I mostly nuked the content on my account a few years ago. Sure there’s some stuff now, but it’s nothing important. I’m just leaving it there for convenience.
That said I’m mostly moving off of corporate owned media. I put links to my new stuff on my accounts on those sites.