Why does everyone opt for traditional 2D over Isometric?

With the exception of the EverQuest games, I have not seen any others using isometric tiling. I was curious as to why? Do most gamers like to use the D-Pad rather than stylus clicking? That's the only plausible reason I can think of. With traditional 2D tiling, the D-Pad is perfect for movement. With isometric, the stylus is almost required, because moving with the D-Pad could be a bit quirky.
If you've chosen traditional 2D tiling over isometric tiling, perhaps you could clue me in. Thanks!
If you've chosen traditional 2D tiling over isometric tiling, perhaps you could clue me in. Thanks!
