I too put ice in all of my drinks, even in the winter. It's helpful for when I'm at work because one of the clients will drink any sort of beverage you try to keep in the fridge, so you have to hide any drinks you bring in and if you want a cold drink you need ice. I just keep a big bag of ice in the freezer there and now the other people at work are starting to use it too, which makes me feel less guilty about keeping it there and taking up so much space.
edit: although I am somewhat peeved that they didn't ask me. I mean, the answer would have been yes, but still. Kind of presumptuous.