> friendships are heavily based on repeated unplanned interactions I think this hits the nail on the head. 'Unplanned' is the keyword here. If it's a party it'

> friendships are heavily based on repeated unplanned interactions I think this hits the nail on the head. 'Unplanned' is the keyword here. If it's a party it's likely your friend will invite you, but it's also very likely that you will miss out on some banter in the comment section of a pic they uploaded on FB because you were not around. This is not something deliberate—it's casual, it's unplanned, it's organic, and you will not be included in it if you are not on the platform. I think a lot of people here on HN are parts of bubbles (for lack of a better word) whether their real life social circles are not very active on FB either. If that's the case, you can pretty much leave FB without it affecting you too much. But if your friends are active on FB, and you are the only one who is not, well it's your choice and that's perfectly fine, but it definitely has an effect.