We have multiple reasons to believe why this is not needed.

• Username/password options present security issues that we are not keen to introduce. In case of a security breach usernames and password would be exposed, making many users vulnerable for it.
• All other social media has username/password registration, you just simply need to remember which one you used. Even less, because if you use the same email address for facebook/google/twitter/etc..., your login will work with any of those social logins, because we match email address to racelab accounts. Making it even easier to not needing to remember which social logins you used.
• We're not sure where is the 'difficulty' logging in with social login for you, but remembering username/passwords and dealing with forgotten password, etc seems to present much more difficulty remembering

We've tried to show you the reasons why we choose not to onboard this idea long time ago. Hope the explanation wil reach you.
Thanks for your understanding.

We believe that we produce a much more secure platform with this decision, and also provides an easy to use (not needing to type any username/password, simply clicking probably twice during the login process)