Just to put my $0.02 in 
Nearfields also came into use so that engineers could have a speaker that was more representative of what the average person listened to music on.
That is the main reason you see NS10s in studios. Think about it. NS10s are probably one of the crappiest sounding monitors in existence. You can get a pair for $300. And common wisdom suggests that if you can make a mix sound good on the NS10s, the mix will generally translate pretty well to other systems.
Remember, the mix has got to come across well on clock radios, t.v. speakers (not the booming home theaters guys, you know what I mean), basic stock stereo systems in automobiles etc. Not to mention Walkman headphones and the like.
It's funny sometimes to see an engineer mix his a$$ off in a million dollar facility and run the final mix through the 3-inch speaker on the half inch machine before printing it.
Okay that was more like $0.37...so, sue me.
Peace
DReal
...Ahma tie my brain behind my back, just to make dis sh*t fair...
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