I'm currently working on a project which has only social login (but allows you to choose between facebook and google) and this was a very deliberate move. For any given person on this planet, there is a higher chance that they use facebook or gmail over any other "service", so no need to offer support for 10 different social logins. Also, this is more about imposing a qualitative filter on the users who sign up. If t…
“If the earliest users you have don't like you enough to give you their social login details ” Perhaps I’m an anomaly, but if there is no regular email sign-up, I’m not using your product, period. There’s enough information floating around about me in databases all over the world, I don’t need them to be further connected and linked. To see the situation with FB/CA and then demand your users use their login is insult…
Eventually I got back into the account after a few months, since then I never rely on a google account for anything.
Similarly, I don't use facebook.
As for my data: 100% email login (I don't allow social logins)