E-Mail predates the commercialisation of the net. When the first companies came everybody already had a mail address, thus everybody depends on it (I.e. for reg

E-Mail predates the commercialisation of the net. When the first companies came everybody already had a mail address, thus everybody depends on it (I.e. for registration, password lost, ...) Thus everybody still needs a mail address even though (in my observation) actual communication moves to WhatsApp and FB messenger.