As the lens focal length becomes wider the effect of camera shake on the photo becomes less. So generally if you use a shutter speed that is 1/1.5 x focal length or 1/2 x focal length then camera shake will not be a problem. Under these conditions you see that the telephoto lenses are more susceptible to camera shake and are more likely to be found in the longer lenses. With the very good ISO performance of today's dslr's it's fairly easy to shoot at shutter speeds above this minimum just by raising the ISO and in the case of a very fast lens like the 50mm f1.8 lens to use a wider aperture. I very seldom use a tripod on lenses shorter than about 300mm if the lighting is good.
You will find that the newer DX kit lenses have VR. This is because the newer high resolution cameras will show camera shake easier than the older cameras with lower MP sensors. I also think that these new high resolution DX cameras are more likely to be used by newer photographers that may not have yet perfected their shooting skills and may be more likely to have camera shake.