A Slide Rule doesnt shut down abruptly when it gets too hot.
One hundred people all using Slide Rules and Paper Pads do not start wailing and screaming due to a single-point failure.
A Slide Rule doesnt smoke whenever the power supply hiccups.
A Slide Rule doesnt care if you smoke, or hiccup.
You can spill coffee on a Slide Rule; you can use a Slide Rule while completely submerged in coffee.
You never get nasty system messages about filling up your entire paper quota with pointless GIF pictures for the root window.
A Slide Rule and Paper Pad fit in a briefcase with space left over for lunch or a change of underwear.
A properly used Slide Rule can perform pipelined *and* parallel operations. (Okay, you need a guru for this.)
You dont get junk mail offering pricey software upgrades that fix current floating point errors while introducing new ones.
A Slide Rule doesnt need scheduled hardware maintenance.
A Paper Pad supports text and graphics images easily, and can be easily upgraded from monochrome to color.
Slide Rules are designed to a standardized, open architecture.
You can hold a Slide Rule at arms length, to hit the obnoxious person at the next seat over.
A Slide Rule is immune to viruses, worms, and other depredations from hostile adolescents with telephones.
Additional Paper Pads can be integrated into the system seamlessly and without needing to reconfigure everything.
Nobody will make you feel bad by introducing a smaller, faster, cheaper slide rule next month.