If one wants to log into a website that isn't facebook, one shouldn't be forced to have a login from a "social network" they don't use.
…except when that website first make you use facebook.
> If your belief that Facebook logins are a bad thing is widespread, people will stop only implementing Facebook logins because it's a bad business decision.
These things are a slow process.
> Stop whining because the market doesn't agree with you.
Luckily, my "whining" (the part about the social logins that you could only argue against, my privacy points were bulletproof and spot-on) is backed up by evidence:
http://www.emarketer.com/Article/Privacy-Concerns-Keep-Users...