Organization is another reason Google is not (officially) supporting SD cards anymore. Say you download a game that downloads an additional 1GB file (resources, etc). If you lose or change your SD card, then you need to download it again - or if the app data was on there it will be lost. People then want to move apps to SD, which causes problems that normally wouldn't be there. I can't say that I'm excited about it (and I still have a 32GB microSD in my RAZR HD, but now both storage areas are completely full), but it makes sense.