Today I went out with my Nikon 5100, a much under rated camera in my opinion, which I tend to use these days as a dedicated B & W camera. I shoot straight into monochrome, then do minimal post processing in Picasa3 and/or The Gimp, just as I do when I shoot in colour.
I like shooting in Black and White. Maybe because I'm red/green colour blind.
Colour is OK provided the palette doesn't get too complicated, as in this rose shot. Otherwise it gets too distracting I find.