There's nothing "wrong" with it.  It was a good system with the best graphics of the three (Xbox, PS2, Gamecube).  It has a small library of exclusive (console exclusive anyway) titles like Halo 1 & 2, Fable, Forza, Otogi 1 & 2, Panzer Dragoon Orta, Toejam & Earl 3, Voodoo Vince and several others that are must-play games IMO.  Once they replaced the "Duke" controller with the "S" model, things were even better.  
I had one until a couple of years ago when I sold a huge chunk of my collection off.  I will probably get one again sometime down the road, though it's not a priority.