Although this isn't my first MP3 player-- I've owned two iPod Nanos in my time, and I have no complaints about either one-- The IPod Touch is so much more than just an MP3 player. It is a portal one can use to expand horizons easily overlooked when on a regular computer.
I'm talking about the numerous apps available in iTunes's app store, a lot of which are absolutely free-- and so useful, I wonder how and why they're free. I've downloaded all kinds of apps, ranging from Pandora Internet Radio and Facebook, to BBCReader and all of Shakespeare's works in one place. I have yet to pay for an app and the pages to scroll across are multiplying at a rapid, scary pace. I've found a way to organize things I never thought about organizing to begin with, and some I've organized in less convenient ways than the swipe or touch of my index finger.
After: Using the Needles application on the iPod Touch (isn't it purty?!?)
I could go on and on about how my iPod Touch has changed my life, albeit in small ways, in just a matter of days.
Finally, what fascinates me the most is that a device such as this is like one of those leatherbound, zippered planners that serious business people used to carry around to organize their hectically important lives. Add to that they had to get the refills, which cost a fortune and must be filled out by hand. Nowadays, even teenagers have their lives organized in a device that not even a CEO would've dreamed of owning less than a decade ago.
I don't believe anything makes you happy on its own, but I feel lucky in more ways than I can express for having a lot of things in my life, and the iPod Touch is one of those many things that make me smile.