I wear disposable contacts a lot at my civilian job. They are a lot more practical in my line of work, as they don't fog when going from one temperature extreme to another. Also, I can wear normal safety glasses instead of the big, honking ones that go over the glasses, and I can buy cheaper sunglasses to destroy at work, instead of shelling out $200 for prescription ones. They are a pain in the six when they get dust or other irritants behind them, and mine tend to dry out often, requiring frequent trips to the solution bath. Overall, I still prefer them to wearing glasses.