If you ever have a chance to see Ansel Adams glass slides you'd be underwhelmed. You of course would think that they are just faded with age, but the fact is Adams took a base negative and did magic to it. Sure the composition, and basic exposure was excellent, but the printing was the masterpiece. Don't believe me, there is a book of Adams color chromes floating around. Not too impressive.
Personally, I go all over the place with processing. 99% of my landscapes are natural in terms of RAW processing followed by sharpening. But sometimes I like to break out the bag of tricks and see what i can do.
Here is an example of breaking out the bag of tricks on what was an ok photo but didn't have the mood i was looking for:
I think if Ansel was alive today he'd be processing junkie to get the mood he was looking for.
But yeah, I agree, you CANNOT take your ordinary photos and turn them into a masterpiece via photoshop. You can only make a marginal photo passable, and a good photo better. Bad photos deserve the recycle bin or the waste paper basket if it's film.