Because I'm primarily a digital artist, I don't work with traditional media nearly as often as I do virtual media. Occassionally, though, I get the itch to move real paint over a canvas or feel the soft scratch of real charcoal across the paper. Also occassionally, I have no choice, as in a couple of illustration classes I had in college which required the use of traditional media.
Each time I work with real media, I do get frustrated by its natural limitations, but I also experience joys I don't normally find in the digital world, such as the thrill of a disastrous mistake gone horribly right, or the irreproducible transluscence of thin layers of paint glazed one over the other. I may not do it often, but I'll definitely never completely abandon the traditional for the digital--they feed on each other, and each provides experiences the other never can.