I agree! Never judge a painting without seeing it in person. A 2D replicated digital image, no matter the resolution, is not the same as seeing the brush strokes and paint layers or the size of the painting in person. Plus the colors & lighting will be different as well. Sometimes there is even an added benefit from the environment.

Of course, high res copies of these is a great thing to do as well. The above comment should take nothing away from that. They're just different things with different purposes.