It's a creative call. I have this engrained habit of always exposing for shadow detail. If I decide not to have it in my final print, I burn in the shadows or bump up the contrast. Aesthetically, for my images, I like shadow detail. My images can look too heavy if there are inky shadows. But one photographer that does dark shadows well is Ralph Gibson. http://www.ralphgibson.com/gallery.html
And Gibson both overexposes and overdevelops... Isn't that funny?!
"Often moments come looking for us". - Robert Frank
"Make good art!" - Neil Gaiman
"...the heart and mind are the true lens of the camera". - Yousuf Karsh