It probably wasn't, but we needed some way to save high scores, and "outsourcing" auth to FB was the simplest way. I've done other projects where that's optional, and that'll probably be the end goal for this as well.
If it's any consolation, I don't like sites that only use FB auth either... this is just a product of the time-constraint.
If it's any consolation, I don't like sites that only use FB auth either... this is just a product of the time-constraint.