I usually wear light concealer to cover up blemishes, and different varieties of eye makeup, depending on my mood
I can understand feeling weird about really HEAVY make up, but I personally have fun with eye make up and don't wear enough base to clog my pores/look greasy, so I don't see anything wrong with it. I understand, "It's not natural" and all that, but it's really no big deal, except it sometimes looks gross if people use like a pound of it. I think everyone has the potential to look pretty without make-up, but whether you feel like it or not is no biggie.