My DS is also the Lite model, and I have mixed feelings about it. It is undoubtly fragile, it has it has the WORST grip I've ever seen on a controller/portable system, the buttons are unconfortable and the D-pad is horrible. But when I remember some of the great games I've played on it I realize how much I love the little thing. I wouldn't call its game selection is "perfect" (I really wish there were more action games and platformers =/), but there were some real gems that couldn't have been made anywhere else that made my purchase worth it.
(too bad they'll never make a "DS Phat" with the Lite's brightness settings. Had it existed, I'd buy it in a heartbeat and 95% of my criticism towards the system would be gone)