I tend to try to get it right in the camera. While I do use some processing, generally I don't like spending a lot of time processing or I feel as if I'm not taking the picture right to begin with... or creating a reality through digital manipulation instead of optical manipulation.
Good example, recently I took a picture of a stone house in a forest. I wanted to give it a bit of a purple hue to make it look "enchanted". While I could have done this in Photoshop, instead I used a magenta gel over my flash. I dunno, it just feels better to be able to get it right without extensive post-processing - more of a challenge, more fun, less keyboard & mouse drudgery.