When I really picked my photography hobby back up last year, I didn't may much attention to post processing. It wasn't that I didn't have the software - I have photoshop - but I was happy just letting iPhoto do the work. Then, as I've mentioned before, part of this year's resolutions was to do better on my post processing. So I started doing some research and downloaded trials of lightroom and Topaz Adjust. I am stunned by the results. What a huge difference. Take a look here at one of Holgate Glacier I took in Alaska before and after processing.
Moral of the story: Don't be stupid like me. Take the time to post process your photos.
Before:
After:
After: