Thinking of selling my 18-70 and 70-300VR and getting an 18-200 VR. I've run into too many situations where I need to swap the lenses to get the shot I want and (in wildlife cases) end up missing the shot completely. I like the thought of having one lens for all situations, but I would be giving up that 200 to 300 range. Someday, I would like to take sports pictures of my potential children, among other things. Just curious if I would be doing more harm then good by doing this swap.