Enhancing, editing or processing?
My answer to all 3 is yes. They are different art forms though. Processing is a necessary step. It's the process of developing the raw image or putting YOUR look on the jpeg. It's not altering the image. That kind of work is capable of being done in the raw processor. No pixel editing involved.
Enhancing-sure. It is some people's "LOOK." It's their art. I don't enhance a lot, but when it is done well I love enhanced images and the ones I do enhance make me wish I had more time to do that kind of work. It does take some pixel altering combined with developing.
Editing the image to be something it's not? Sure again. It's art. It's someone's art besides mine most of the time, but I definitely have a GREAT appreciation for it. It requires talent with the camera AND talent in the editing program.
Should YOU? It's up to you what your art is.
Should I? I am more a minimalist/purest type of photographer most of the time. I drool and wish I had more skill with the digital art side of it!!! While I have a little bit of down time I think I'll go work on some old images and some editing them into new art. It's a good challenge I wish I had more time for. Thanks for the spark of what may be!