I played Tau because of the rules and because of the maps. There is some racial matchups on some maps that simply can't be won. And if I have to guess who I'm playing against, what race he will pick and what map he will pick... Well excuse me for going for the race that has pretty much no weaknesses or weak maps xD
Ork is fun, and I did ok vs true in training with them, but the playstyle I had to go through with them to win was anything but fun. If you think these games were boring you should see me camping behind a building wall until I have enough of a mass to bring my opponent down...