With alternatives that are fully supported by native reading and writing in OS X, such as FAT32 and exFAT, and with 3rd party solutions for NTFS, there is no need for embarrassment on Apple's part for not supporting a Windows proprietary file system. At least they can read it, which facilitates migrating from Windows to OS X. Apple has no motivation to make the reverse easier. At least you can read NTFS natively in OS X. Windows doesn't even do that much with HFS+. Apple has no obligation to march to Microsoft's beat.