I have to admit it, I got caught up in the hype and I bought a computer. The novelty wore off after a couple of days. Since then, it has sat on my desk, almost completely unused. In fact, it's one of the worst purchases I've ever made.
Computers in general are rather pointless devices. They're far bulkier than my pencil and paper, so they're not very good on the go. They're much less comfortable to use than my clipboard, especially when I have to do a lot of writing. They require so much power relative to even a battery powered book light that they're not usable for anything for when I just want to take notes. My pencil and paper has infinite resolution, and thus is a much better medium for reading and writing.
I learned the hard way that the usefulness of computers is purely a marketing creation. They look like they have potential, but in practice they're just the combination of the worst of every other type of new fangled technology that has come out in the past 20 years.
Every tool is only as good as how you implement it.