[slig]

If you're shooting JPEG, then your camera has already done a lot of corrections for you. The heuristics that the camera use are limited, and one can always do better than that by doing the post processing manually on Lightroom.

Try shooting RAW + JPEG and see the differences between the pics.

Personally, I believe that doing the post-processing myself is part of the experience of photography, and I find it fun to tune each photo according to my tastes. But I do understand that's not for everyone.