I wear make up on occasion. It's usually more so when I'm at work though where I have to look professional and put together. I rarely put on make up when I go out and get things done, and if I do, it's usually just a very light dusting of foundation.
I guess as a fairly tom-boy ish person, I've never really figured the need to cake up the make up. If a guy digs you, they'll dig you no matter what state you're in.