16GB is fine. I can certainly afford more, but I don't understand what I'd do with the space.
- I have every photo and video taken since the iPhone 3G stored locally.
- I just counted and I have 81 applications. Is this a comically small amount?
- I stream videos and music, so those don't need to be stored locally and a streaming library is far larger than even the biggest phone could hold.
Sure, give me 32GB and I'll probably find a way to fill it. Maybe I'll install 200 applications I don't use instead of having only 81 applications that I don't use.
I honestly don't know what the 128GB people are doing. Well, I suppose if you can't do streaming because you aren't around Wi-Fi and don't have an unlimited data plan, then you'd want to store as much locally as you could. So streaming might be the big difference between 16GB and 128GB people.