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I process several hundred at a sitting, so prefer to avoid needing to mess with them individually. It's also an aesthetic preference - I've seen too many photos that have over the top saturation and contrast added, and some people will try to polish every single turd.
That said, some days I find myself wiggling the exposure on almost all of my shots. That comes with needing to shoot in even the worst light thought.
If you edit, shoot in raw.