When PCs were first coming out, we had to write a business case and present it to management to get one. "How is a PC going to improve productivity" was the mantra. It seemed silly. Our mainframe dumb-terminals had 5 sec page down response time while editing a file.
But there is a hidden cost to these marvelous tools. I've often thought it would be interesting to keep track of all the little things you have to do to a PC and the time it took. Install a driver, backup files, take an SMS push, reboot, spend four freaking days recovering from a PointSec failure - it all adds up. Over a year, how much productivity do you think is lost because of this fabulous productivity tool?