I had a phase when I only had a 35mm-equivalent prime and was happy for a long time, I have a lot of lenses now but I can imagine having just that 9 and not getting bored for a long time though I wouldn't be doing sports -- if you can find flower beds that are exceptionally deep it even takes good flower photos but the only beds I can find that deep are the ones my wife maintains, if I got to Ithaca or Cornell flower beds just aren't deep enough that I can hold the lens over them and have flowers all the way to the edge.