It's not my intention to be rude, but I think you are wrong. I believe that most people don't like or care for choice when it comes to electronics. They want it to work. Which has been the extremely successful marketing strategy for the advertising experts.
This is also why most android users don't bother to change the look of their phones, or purchase swiftkey.
When it comes to something as simple as a phone is (in the big picture) I hardly believe that choice really is the reason high end android smartphones sell that well these days.
Regarding the bigger screen I'll have to agree, but I still see a lot of new android users that would've been better off had they played safe and gotten an iPhone.
FWIW here is my opinion to your post. I am one of those masses I guess who would NEVER have dreamed of straying from iOS/iPhone......UNTIL
Will try to keep this short. I am a tech junkie. I love especially mobile technology. Apple was a great kiddie pool phone for me and it was ever so reliable and wonderful for my first smartphone without hassles. Previously I owned (shudder) HTC windows 6.5 Touch Diamond (kill me now for my stupidity), Blackberry Storm (really, kill me again) and finally the smart phone I wanted the iPhone. I now own an S3.
Why? It certainly wasn't cheaper to go with the S3. I had concerns that it wouldn't be as reliable as my trusty iP4.
I have had the phone for a year now and it is reliable as hell. Use it as my alarm clock every day as well as so much more. I run my Russian language lessons on it (which I only had to drag and drop for them to work) Music player for when I am in the shower, media reader, weather info, email, texting and yes even phone calls. I use it as a GPS, I surf with it, take pictures with it (although the camera isn't as good as my iP4). Use it for google translate etc etc. (The reason I mention this is just to let you know I don't just use the device for texting.)
I love deciding what I want to see on my homescreen instead of a bunch of apps that you can't hide unless you stuff them onto another page.
Touch Wiz dog locked on me a few times so I switched to Nova and not a single problem with the UI.
Swiftkey is the best keyboard app I have ever used. I barely have to type 3 letters and I can just hit the space bar, it is that accurate.
I have NOT rooted or messed with the phone other than the Interface.
What drew me in initially was boredom of a stagnant OS and an itty bitty screen. I just wanted a bit more. Although personally I would love it if the phone had the same specs with a 4.5" screen.
People who say that Android (esp JB) is not smooth or fluid are just blind fans of other OSs. I am pretty fussy on my devices and get bored easily but I have to say that the S3 is pretty amazing.
The only things I dislike is the noise cancellation fail when I use my car's BT with it and the camera can't touch the iP4 when it comes to photo clarity (I may have a small issue with my phone's camera) but hard to get them to replace it when the damn thing still works, but just not as perfectly as I would desire.
So yes, I really really love the screen, customization, options of keyboards etc. But that is not what drew me in.
What drew me in was Apple's failure to elevate it's OS and it's devices. They rested on their laurels and have fallen behind. Yes they still put out good products but face it, when the OS big update merely offers what Android has already been offering for quite a while, it hardly seems they are striving to excel. Why else would they have fired the iOS dev head?
Had they allowed me the slightest customization included in a slightly larger (NOT TALLER) screen. I would never have strayed.
I am glad I did.