I also find it funny how the 64GB version is still available in the Microsoft Store. Paying $100 more for double the disk space? It seems like Microsoft set this up for failure from the get go. What were they thinking? That's aside from the fact you have only 30GB or so of free disk space on the 64GB version.
The 64GB version isn't something I'd ever be interested in, nor would I be likely to recommend it to anyone, but the ridicule is unfounded. Microsoft isn't offering anything that everyone else offers as well, including Apple (http://store.apple.com/us/browse/home/shop_mac/family/macbook_air?aid=AIC-WWW-NAUS-K2-CONFIGURE-MACBOOKAIR). Why are they not considered to have "set this up for failure from the get go"? There are people who buy these devices and are quite happy with the amount of storage they have.