Especially if you use Sudowrite a lot, there is a lot of content inside an account. For some users some or all of this would result in a copyright, financial or personal catastrophy if relases or made public without them agreeing.
With the security problems rising globally I'd ask you to consider giving users the possibility of a two factor authentification via mail or authentificator app or sms.

Also it might be worth to consider to give them control over how long a session remains logged in before being automatically terminated for security and a new login is required (this helps against session hijacking).