I am guessing two possibilities:
1. The friction to onboard new users would be pretty high as it currently stands, if they have to go and figure out using a key extension.
2. The developer, in this case @hodlbod, would need to trust that the signing extension options are excellent, and have been audited rigorously.
I can imagine that as a developer, if one knows one is acting in good faith, it might be easier to trust oneself and one’s  intentions, than those of others?

Curious to hear thoughts, esp from developers @hodlbod  @jb55  @Vitor Pamplona  @miljan   @Martti Malmi @Kieran @brugeman 

 Very well put 

 Nsec login definitely doesn't make much sense, aside from "bunkers are high friction for now so Damus users should just paste nsec". This will improve as bunkers improve, I will share a significant step forward in this area next week.

Local nsec signup makes total sense - let users start asap but then let them export nsec to a bunker. Nostr-login widget has this option built-in, only works with nsec.app for now but will be proposed as NIP upgrade when we are confident it's good enough.
 

 I agree, nsec.app is the smoothest experience I've seen so far. Thinking about seeing if I can integrate it into the onboarding experience in Coracle, friction notwithstanding. 

 Awesome! I'm sure there's a lot to improve there, please let me know if you have ideas or issues.