I picked up the sarcasm immediately but it's scary how many times I've been told (HERE, on HN of all places) that it's impossible to live a normal life without Facebook. As in: literally, with a straight face someone would claim they would have no contact with friends if not for Facebook and be totally serious about it. Kind of unbelievable but I've heard it multiple times.
i mean facebook gives you the means to provide alternate contact points(phone numbers) to your friends. people don't choose to use it coz of whatever reason deserve to be cut off-why wouldn't you want your friends phone numbers in your phone?
Nowadays the means of keeping contact information when making new friends is whatsapp or facebook. So yes, this would not be a problem for now, but it would be in a few years when mobile numbers become really obsolete (hopefully not).