There's a little dead pixel on the top of my DS Lite. It hangs out on the bottom of the screen, green and dull, stamping every game like an eye floater that just won't go away.
In the seven years I've owned a DS Lite—my first and only DS—I've grown quite fond of that dead pixel. It's kept me company as I played through many, many amazing games on what wound up turning into my favorite system of all time. When I think of the DS, I think of that little green square, and I think of the games it's decorated.
But the 3DS has taken over, and although Nintendo says they're still selling their old console, the DS's time has passed. It's no longer part of Nintendo's sales projections, meaning the company doesn't plan on seeing heavy profits from the system anymore. (And profits were heavy: counting all four models, Nintendo has sold a whopping 153.8 million DSes over the years.)