This has been discussed before; "better" != "only". If the target is to have a contact, an email or a phone number are sufficient. Also, it's fallacious to th

This has been discussed before; "better" != "only". If the target is to have a contact, an email or a phone number are sufficient. Also, it's fallacious to think that emails/phones are subject to change, while a Facebook account isn't - some people close it. Especially emails nowadays are used for a lot of services, so people stick with them for a long time, more than the past.