Put me around 10-20%, i will only use PP to increase exposure, contrast and brightness only if i found out my pics is underexposed. I did not used photoshop but i used ACD photo manager instead.

I would try my best not to rely too much to PP, but sometimes u have to resort it if ur pics looked under or over exposed. The only thing that i wont do in PP is to improve a subject's quality, say a model's clearer skin, pimples etc. Coz basically i dont know how to do that.