Right now I do pay a bit more attention to the bad photos I shot. With bad I don’t mean that they are horribly framed or anything, but sometimes you had your camera set wrong and you notice it at home when you see the overblown highlights or whatever. Other times it’s just that the lightning was bad during the day, which results in dull colors. There are tons of things that can go wrong, and fortunately you can fix most of the problems very well if you shoot RAW files. But there are times where I go straight for black and white presets, especially when the colors are dull.
But I can’t tell you anymore how many bad pictures I converted to black and white, it’s often surprising how bad the pictures look and how great they turn out if you try out different black and white settings. I am honest, I love black and white images anyway, they have a certain flavour that I really like. But apart from that, I also like it because you can fix pretty horrible photos with it and make them look great. That’s why I almost never delete photos before I tried different things with them, deleting them is really the last option if nothing works.