I don't know about you, but my iPhone 4 was feeling pretty sluggish doing normal everyday stuff in iOS by the time I upgraded to the 5. That said, I have used a

I don't know about you, but my iPhone 4 was feeling pretty sluggish doing normal everyday stuff in iOS by the time I upgraded to the 5. That said, I have used a friend's 4s and it was also quite a bit more fluid than the 4. Between that and LTE, I think there was quite a bit of value though I could see why people probably wanted more than just a performance boost and a slight physical upgrade.