Well, its a balance between being an artist and a technician. When I paint, or draw, I do what it takes to make it pleasing. Have an oil that a couple of years old now and I hate the water so one of these days I'll repaint the water and touch up some blemishes that I had not noticed back then. So with CG art, if I feel geekish, I proudly boast that its pure Bryce, or pure Poser. If I want a pleasing image, then whatever tool works and postwork is a must. Depends on your goal. Techinical or aesthetic.