I have come to the conclusion over the last few years ... that I absolutely love to use prime lenses. Mostly for the high quality of the images they produce and the low light capabilities. They make it so easy to adjust and play around with the depth of field... what is in focus and what is out of focus. Also these lenses do make you constantly think about your composition. I don't even like to touch the one zoom lens I own. The Nikon 35mm 1.8 G lens stays on my camera 80-90% of the time lately.
Some thoughts about photography and life in general...