Of course it's more convenient for the caller. But what about the receiver of the call? They might be in the middle of other tasks, and perhaps they want to hav

Of course it's more convenient for the caller. But what about the receiver of the call? They might be in the middle of other tasks, and perhaps they want to have some time to plan their side of the conversation, as the caller did. I don't think the argument is that voice communication is not useful. The only issue is unsolicited calls.