I adore my 50mm. We've got an L-series 24-70mm f/2.8 lens, and even with it's superior build and better glass, I find myself shooting with the 50mm 90% of the time. It's just so much better in low-light, and you get a beautiful depth of field, but that can be said for any prime lens. I want to get something a bit wider, and I've got my eye on a 28mm f/1.8 because the 50mm just gets cramped indoors, but by all means I recommend the 50mm. It's cheap and you won't ever leave your house without it once you've got it.