I think you might be looking at the older polycarbonate Macbook thought somewhat rose-tinted glasses. If you remember, it started at $1000, which came with a last-gen Core2Duo processor and a small hard drive. In terms of power for money, or bang for buck, it was a pretty bad deal. It looked nice, and it offered all the basic features that Mac users expected at the time. However, at that same time, for $200 more, you could get an aluminum Macbook Pro 13" with double the RAM and a faster CPU. Pretty sure the MBP had better battery life too. So the polycarbonate Macbook was not such a good deal.
Also, the polycarbonate Macbook was discontinued in mid-2011 (though sold to education customers only through 2012). So they were not available from 2012 onward.
I think the current 13" MBA is the entry-level / education market laptop now. It will continue to be until they find a way to make the retina Macbook start at $999. For those that want a better screen have the option of rMB or MBP for $300 or $500 more, respectively. For $500 more, you can have a retina screen and ports. Or, for $300 more you can have a retina screen and maximum portability.
The $1000 Macbook had the same CPU and ram as the Pro actually. Performance was nearly the same, you could just upgrade the Pro higher, and was a great value relatively speaking. It did have less ram, but that could be upgraded yourself. The white was just a less flashy version of the same basic computer, which is why I liked it.