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I get what you're saying, but I don't really want another camera. I'm kind of embracing having all things in one, and then the 60D (soon to be a 5D MK3) when I really want to take a proper photo. I just want my everyday snaps to not be shit in anything other than perfect light conditions, and to be able to do a tonne of decent post on the phone. If it sounds like I've already made up my mind it's because I think I have. Unless someone comes along and says here's a new Nexus - or other Android phone that ships with Vanilla rom - with an iPhone matching (or even beating!) camera and software.
It all depends on what you want.
I find the camera on my Nexus 5 to be adequate, and because photography on the phone isn't my primary thing (email, calendar, web browsing and news apps are) I chose to compromise the camera.
If you're happy with putting photography first and compromising everything else to fit into Apple's world, then yes the iPhone is the business.
But I'm of the opinion that it's all about the optics and phone optics will never be great (you cannot shrink glass, and software can only do so much). So I'd rather (and have) invest in a point and shoot that I do carry everywhere.
My real problem was that I never used my DSLR camera.
The solution wasn't a better phone, the real solution was a point and click with a great sensor and a phenomenal prime lens, that was small enough to be carried everywhere.
So I bought one of these a few years ago: http://www.dpreview.com/products/panasonic/slrs/panasonic_dmcgx1 with a really low f1.4 prime lens. It's freaking awesome, and I do have it on me almost every day.
They've got a new version of that which is even smaller and more like a classic reporter's camera: http://www.dpreview.com/products/panasonic/slrs/panasonic_dmcgm1
Oh, and that newer one has WiFi, etc... so the picture sharing bit is solved too.
If I were in your place today, I'd be looking at solving the camera problem rather than compromising how I use a smart phone +90% of the time.