1. You have been on substack longer than you’ve been on Nostr and already have an audience on substack that is yet to be on Nostr, some of which may include paying subscribers.
2. Sometimes on Nostr it can feel like you are preaching to the choir and substack offers a perfect greenfield. For example, when i started my substack I wanted to use it as a tool for BTC education for the skeptics and miseducated folks. It did help quite a few no coiners get curious enough to become bitcoiners.
3. It is smooth and simple to use, especially when you want to integrate it with your website
4. It’s slowly becoming a one stop shop for everything from podcasting, publishing to livestreaming. Dangerous due to censorship risk, but from a creator’s standpoint it definitely makes one’s life easier
If a better, Nostr native client would come out; especially one that makes subs in btc possible? That would be a game changer!