How do you guys do your laundry?
Separate whites from colors (and if you're feeling really fancy, dark colors from bright colors) and wash each load. I've used machines my whole life, and I don't usually air dry things unless the garment in question specifically requires it. I don't have any reservations about air-drying, but I suppose it's just not something I grew up doing.
Back when I was living in Australia, I knew lots of people who air-dried most things, but here in the states (Utah, at least) clotheslines are a rare sight indeed, especially if the house is of more modern design. In fact, the only example I can think of is my great-grandmother's house, and I think she even eventually used machines. So, it could be an entirely regional thing.