There is also, and this is not secondary, the fact that I think Nostr is already too much about Bitcoin.
I don't want to contribute more content about Bitcoin (including an address I would own) and more interactions about Bitcoin (including receiving transactions).
I don't currently own any Bitcoin, but if and when I do (which I more than likely will) connecting my address to my Nostr account won't be my priority.
I might or might not do it.