I hear this every now and then from "the experts", but I am not sure if it is broken in the first place. Email with a nice client is very efficient and effectiv

I hear this every now and then from "the experts", but I am not sure if it is broken in the first place. Email with a nice client is very efficient and effective, it will not be beaten in the near future. What do we replace it with? IM, skype, google hangout? Nope