I cant speak for anyone else but 64GB is perfect for me - though sometimes I wish it had an SD card. When I travel i download and take with me 20+ movies (flights, quiet times). I also have 20GB of music and i take a LOT of photos/videos (how can you not?). I also store a lot of personal files so use it as a flash drive. And i also downloaded maps of continents I imagine I could end up unplanned and then would wish I had downloaded offline maps. a little paranoid.

This is what i wanted and I have it. This is the reason why I never bought the Galaxy Nexus as 16GB for me would mean I would have to remove files quite often. But that is just me. All about use cases.