Why are we using analog technology in a digital world?
Because it makes it easier to absorb information quickly. This is a fact learned the hard way by the auto industry after they switched to digital displays. A blue number just isn't the same as seeing the needle approach the red line.
It seems that the same is true in marketing. A recent NYT article states that direct mail is up even in the days of digital content and delivery. It seems that last year was the first time that bulk (direct) mail exceeded the number of first class pieces.