Even after all this time with two fatal breakages of my BlackBerry, I return to the same device because of the multi-functionality it provides. I, like many, think about what I need and act accordingly, but most don't.
Obviously I'm biased to some extent being that reporting the latest technology is my job. However, most of us in my generation don't really care unless it directly impacts us or has a substantial effect on our lives.
Most of the technology we use just blends into every day life and we take it for granted. VLE's, email, biometrics for those who are used to using it; even the desktop mouse, we barely notice anymore.
The technology we do notice is the missing piece from our lives, filled by a colleague or a friend with a new device which we long to own. If something is cool, we'll geek out and buy it. But most of the marketing is down to the consumers by showing their friends, family, colleagues and even random people seeing it in everyday life. The "want" takes precedence and the "need" diminishes.
For me and my perspective, computing and technology seem to be a niche market for most. Unless it directly involves you, the chances are you'll stay away. It's a shame, really, as it is us, the next generation which will be making the latest and breaking developments in the future.