Lines in the sand. Who needs Twitter and that social media stuff for business? We have Facebook. Who needs Facebook for business? We have perfectly good email. Who needs email? We have a fax machine. Who needs a fax machine? We have a landline. Who needs a landline? We have the postal service.
People always draw lines in the sand. And then embrace the technology when it becomes common practice. Early adoption is seldom a waste; innovation has its benefits.