having your own ___domain is worth it for email portability.
no matter who is hosting your email (megacorp, a hn darling, your hosting provider, yourself) you get to keep your email addresses. this also means one of the primary means of authenticating you online is not kept hostage by any business.
even for free email services that don't support custom domains, you can likely set up mail forwarding for free or very cheap with your ___domain hoster, and set up 'send as' alias in your inbox.
no matter who is hosting your email (megacorp, a hn darling, your hosting provider, yourself) you get to keep your email addresses. this also means one of the primary means of authenticating you online is not kept hostage by any business.
even for free email services that don't support custom domains, you can likely set up mail forwarding for free or very cheap with your ___domain hoster, and set up 'send as' alias in your inbox.