It just depends. The real damage for most people comes from grains, poor-quality meats, nasty preservatives, and heavily-fried foods. Lightly cooked, high-quality foods are not NEARLY as damaging, and when I cheat, that's what I tend to choose. I'm about 98% raw on average, I'd say, although I still have a little black coffee, usually decaf, in the morning.
I will say that it becomes more and more important, after many years, to get good variety. Sometimes it's better to choose a lower-quality food source, temporarily, just to get some variety.