When you're drinking a huge 32oz drink and the ice crumbles resulting in a tidal wave of liquid all over your shirt/pant.
Ice is the devil - it always melts and dilutes your drink, or it avalanches all over you... No thank you! I'll drink my fountain drink straight.
Ice also makes the worst sound ever when people bite and crunch it. Seriously if anyone does that around I cringe.
I believe the old sniglet for that was "glacioid". And yes, it sucks. But it sucks even more when it happens in a movie theater, and you either get to sit and marinate for an hour or go to the mens room to clean up and miss the flick.
Yeah I always get a drink w/o ice. More drink and no watering down. Sometimes the drink isn't cold tho...
I hate the Ice at I-Hop. They use that crumbled Ice and when you keep getting refills the ice is damn near overflowing out the cup.