2: I <3 nearly-free data storage!
The first hard drive I remember owning was 40MB on the Mac LC my parents got when I was in 6th grade.
Four years later we upgraded to a Performa with a 500MB drive.
Two years after that, we hit 1.2GB. Surely that will never fill up, I thought to myself. Of course, then I got to college right in the midst of the MP3 boom...
Now I have two 250GB drives in my PC, and I can add another two terabytes (an unimaginable 50,000 times larger than my first drive) for less than $100.
Relative to that first drive, that's too cheap to even calculate.