Since the advent of VR/IS/OS and other stabilising technology, it has since become indispensable, so much so that the photographer complains when his 50mm does not come equipped with VR.
There's nothing like good handholding technique, and it's something worth training on. At least if your VR goes bust in the middle of a shoot, you can still pull off decent shots, rather than surrender on the spot.
That is still why I train for a situation when I don't have Image Stabiliser (IS), but use IS when the opportunity arises.
But, if you reached a certain age. IS/VR/OS is very important here as your hand will shake a lot more than before.
