There are still a lot of mail order dealers and regular everyday people performing their daily office and accounting duties by hand. There has not been one single person that I have trained or knew, that after learning what a computer could do for them, thought it was a bad idea.
People are funny that way.
They will resist change. I remember when microwave ovens first came out. My brother and I went together and bought my mother one for Christmas. It emits ultraviolet rays that will give us all cancer. Although this sounds hysterical in the 1990's, this was the immediate reaction to anything different from conventional ovens.