Regardless of whether your plan on having a beverage in the car, the fact that Subaru decided to include it is reason enough for them to do it right. If you never use it, so much the better. But for people (like me) who do freqent 300+ mile trips, the need for a beverage is high. And the cupholder SUCKS. Now granted, I'm still #1 on my waiting list for an STi and it still has the crappy cupholder, so it obviously doesn't mean I'm not going to buy the car. But it will still be aggrevating every time I pop that sucker out and note how cheesy it is.
Bottom line - something worth doing is worth doing right. I'd gladly eat the $0.78 it would cost to put a decent cup holder in the car.