Well it depends what you want really because if your shooting raw it will be flat and need to be processed to be seen. Depends on your preference of editing I like to make my images look true to life with possible some colour correction, sharpening and removing distracting elements.
But you can go way overboard but its a learning curve, ive been retouching for 13 years and I create an image then a week later I will look at it and think FFS. Like the image in my sig the vignette looks ridiculous on the full image.
The camera is a biased tool you cannot trust a photographic image because the photographer shows you what he sees, it can distort reality without editing, make situations look much worce than they are. War an propaganda imagery is a perfect example. Image manipulation has been ongoing since 1870, you can do everything in a darkroom you can with PS just takes longer and more skill. Different chemicals, drawing on negatives, merging negs etc
A good example is if you look at original Ansel Adams prints, his original first images from the darkroom were god awful compared to the when the master printers got hold of them.
This rodchenko image
original image
photomontage
Photo montage is basically the first Photoshop, first popularised by Rodchenko, he cut, paste, retouched and created new energetic images out of single photos.
This effect can be harnessed for good or for worst, such as the white sea canal edition of USSR in construction.
The top image is the original and below is the photo montaged image. The story goes they are criminals, being rehabilitated by hard labour digging a 140 mile canal but in reality they were political prisoners who died digging it out. The most saddening part I think is Rodchenko changed the skeleton like faces of the prisoners to healthy smiling faces…
This was 1933. Its been going on for a long time.