Editing time.

This week I have been pretty busy editing some photograph's, and what I'm finding is just what a pain it is to edit other peoples images.
You see it works like this. 500 of my pictures will take me an hour or so to edit, there's not that much to do with say a wedding. I try to get it right in camera as much as possible which means I'm just "tweaking" the images, a bit lighter or darker maybe, a bit of sharpening, etc etc.
Now with another photographer I can literally spend 2 or 3 days doing the same number of images, mainly because the colours and exposures will vary so much from shot to shot. It baffles me that with a modern hi-tech state of the art digital camera just how bad some peoples pictures can be, but then owning a camera and knowing how to use it are two different things. Why for example when shooting under artificial light (already orange) would you set your camera to shade setting (adding yellow) isn't it bloody yellow enough for you already! then they will shoot on jpeg instead of raw so the option of easily changing it later is gone.
Why do I bother.