This year (2014), it’s ten years since the introduction of the Nikon D70 and thus the real start of the digital revolution for amateur photographers.
In a recent blog post, highly regarded Nikon expert Thom Hogan noted: “The camera makers want to sell you a new camera. I can tell you right now that if you have any DSLR made in the last 10 years, you have a very competent camera already.” (see http://www.dslrbodies.com/newsviews/ultimately-only-you-are-the.html)
Notice that he said 10 years, not 6, 8 or 12. I am 100% sure he had the D70 in mind, and thus we agree on this. The D70 is still a good camera, and it marks the start of an era.
It essentially lacks only in two respects compared to newer bodies: usable dynamic range and high-ISO performance. I will say something on usable dynamic range in a separate post as I find it a less well understood concept, not to be confused with theoretical dynamic range as in DxOmark.
Speaking of DxOmark, the D70 still easily beats any newer camera with a similar DxOmark score (around 50) in real image quality. To see why, have a look at my post on sensor differences. (Hint: you must look at the graphs, not the single numbers for each category. Cameras with higher base ISO fares much worse in DxO scoring.)
Thus, I wish you a Happy Anniversary, D70!