This policy of "only cater for Facebook users, and only Facebook users who don't care about privacy" prevents me from using the service, and prevents me from re

This policy of "only cater for Facebook users, and only Facebook users who don't care about privacy" prevents me from using the service, and prevents me from recommending it to friends and family. That doesn't sound like "nothing wrong" to me. The vast majority of websites let anybody with an email address sign up. This site doesn't.