All of you saying we don't need it are still missing the point... it's called technology, and it's always moving forward. So you're either lying if you say you don't want your tech to improve, or you're stuck in the past. Stop trying to justify what we have today (which is awesome) with what's coming in the future.
Regarding the claim that you can't tell a difference... bulls**t. Yeah, if I hold one phone by itself, I never think about it. I'm blind as a bat, though, and when I hold two phones next to each other I can see the differences (regardless of which is better). BTW, I never suggested other phones were better... I just said they were great, and they are, so again... stop trying to instill a false comfort to justify what you have.
As for the battery life argument... again, bulls**t. How's the battery life on the S4 or One? And on the Lumia 920? Pretty drastic difference, actually.
I really don't understand why anyone wanting the future of Windows Phone to succeed would suggest that we don't need a technological improvement... 1080p, quad processors, or any other feature. I'm sure the same arguments were made about accelerometers, compass, NFC, and any other feature.