My car handled better before I brought the rear in spec. Riding on the inner-edge of the rear tires made my car carve turns up like crazy. I never had tire wear and it was about 2 degrees out. More body roll, and bumpy turns now that my tires are flat. I wanted to prevent tire wear so even though it wasn't broke, I went ahead and fixed it.

I like having green on my alignment report, but I liked how my car handled before. If your tires aren't showing premature wear, enjoy driving your car the way it is now. I believe my lap times would have been better if I were tracking the car with a bit of negative camber.