This standard system was built for a few of reasons. It serves as a backup in case Clickpass isn't working or it can't be used. It might also be a better idea to use a password rather than Clickpass if you're not on your own computer, since it's easy to forget to sign out of Clickpass and whichever other account you signed into.
Next up: I will create the beginning of an account page where you can manage your password and OpenIDs. Eventually, this will also be where payments are managed, but all in good time. We've got so much yet to build before we're ready to launch!