What are you guys talking about? There are more places in which the flashlight is useful besides in Caves. Such as Egyptian, Basement/Stack, Runway (underground), etc..
There are plenty of dark areas in which it is useful. I guess it would also depend on one's monitor/video settings as well, no? That's another reason to keep it. Some people don't like their brightness and gamma turned up to a billion trillion just so they can see reasonably in a couple areas.
I think it would be foolish to get rid of the flashlight.