If you read carefully (something I strongly advise you to do) you will find out that I was talking about my family: they trust my judgement and I can bring them very good reasons for what I propose.

Regarding my other contacts' networks: I certainly do not impose other people what app to use, but at the same time I have no interest in doing something (e.g.: running an app I honestly don't like) just because everybody is doing it.

In all honesty, if someone has something to tell me or I have something to tell someone, we will surely find a way to communicate. Keep in mind that, at least for now, all mobile phones can make phone calls and send text messages (at least to negotiate other means of communication).