[dTal]

I'm not sure if this is meant to be rhetorical? Either way - ideally you have postal service AND electronic communication, and the quality of both reflect on the country.

It's a fair question though - anecdotally, the two main uses for the postal service nowadays (in countries with internet access) are package deliveries and unsolicited marketing (possibly print subscriptions factor in).

To my mind, the unique advantage of the Muggle postal service for personal communications, apart from the globally federated physical distribution network - the one that would make me very hesitant to scrap it - is the difficulty of conducting mass surveillance on it.