"Best money ever created"? This is an perfect example of the fanboyism I was talking about. And no, being a fan is not the same a being a fanboy.
Your "best money ever created" is traceable, slow, expensive, energy hungry, poorly scalable and non-quantum-resistant. Almost every blockchain created afterwards mitigates at least _some_ of these issues, while Bitcoin couldn't deal with any of them even after multiple hardforks and format changes. LN is a workaround, not a solution, and it doesn't address all of these issues either, just adding another layer of complexity on top. Besides, 2+ competing and incompatible LN implementations don't help mass adoption either.
Why first create problems on your own and then heroically overcome them? No blockchain is ideal (IOTA was close to that but they dropped WOTS in favor of ECC), but almost every choice is better than Bitcoin in this or that aspect. I'd go with Monero if we're talking privacy-oriented environment here.
But the broader question is: why even tie Nostr to the quirks of a specific blockchain, unless, of course, the notes are distributed directly on that blockchain? That would eliminate the need in separate relays either: blockchain nodes would be the relays. 

 Blah blah. Don't use it if you don't agree. I don't really give a shit and I doubt anyone else on Nostr does either.