That's a euphemism for bad cooking, isn't it?
Kidding. We have a dish washer, but actually use it as storage space for things that need to be kept cool. You're supposed to rinse things before putting them into the dish washer. We just figured, if you have to do that, you're already half-way to the drying rack. And it's always cooler than any cupboard space that we have. Even in the summer.
I think this is a popular misconception from many people's experience with bad dishwasher soaps. With high quality detergent and rinse solution I never pre-wash dishes and they virtually always come out clean. I use the Cascade Complete brand which is definitely on the more expensive side, maybe the most expensive, but it's still very cheap accounting for the amount of time in your life it saves from never hand-washing dishes. I also use their rinse aid which makes a big difference too.