The Feeling of Power
The Feeling of Power, by Isaac Asimov.
Whenever I took a math class, and I know I'm not alone in this, I would frequently bother my teachers with "why do I have to learn long division, or fractions, or multiplication, or what have you, when I could just use a calculator instead?"
"Because, Austin, it's important that you know how to do this one your own."
"But why?"
"Because I said so."
I'm sure my routine got old quick, however my teacher turned out to be correct. It's important that I know how to do certain things without the aid, or the crutch, of technology.