plus its not to rugged hence not an option. 
Its the longest I've had a smartphone, most others have not lasted a year. So not sure I can agree with that. Or the comment that its not far more stable than others - although others have come a long way in the last 2 or 3 years.
Trouble is there not rugged, if you see the hell my phone goes through, the drops bashes cracks etc it, the one I had at work (3GS) had a cracked screen within 4 weeks just by catching it on the desk
Certainly not my experience of my 3GS, nearly 3yrs old. Granted, its got a chunk gouged out of the screen (but not cracked), and a cracked case, but if you'd seen the abuse it had suffered - dropped, thrown, sat on, watered, baked, squashed and generally misused

No idea what to replace it with, or even which Smartphones will be around in a year. Despite the lacklustre iPhone 5 announcement, I think Apple is safe for the next generation. Obviously, RIM and Nokia's legacy systems are dead, and HP/Palm don't have hardware to go with the relaunched webOS. Windows or Android though? Or both? Many supposed 'experts' are saying Android looks the most dicey. Windows has certain advantages with WinRT, but its hard to see them getting a good foothold in the marketplace currently...
...though does it matter nowadays, as long as the phone is stable (most are after a few revisions of the OS, although crApple still rule here), and can access arsebook and twotter, do users give a monkeys? Traditional communications methods - email (Android's biggest downfall for me) or even calls/texts aren't important (look at the outcry over GiffGaffs announcement to reduce their 250m/Unlimited_text/Unlimited_data to 250m/Unlimited_text/750Mb has caused, with most users saying drop the call/text allowance to sod all, but keep the unlimited data).
The make (ignoring crApple brainwashed fans) is unimportant. Features are. Nokia are pinning their hopes on a decent camera system, and will shore up Windows (and Nokia's RF is usually pretty good). crApple have nothing special now, beyond 'design' and an OS "that just works as you would expect it to", and, at last, a decent phone system. Google, in reality, have nothing on the face of it, but does allow manufacturers to put their own stamp on it, although outside Samsung, nobody has really succeeded. Android also has the lowest ranking in surveys for people upgrading... ...and the market for 'new' Smartphone users is now quite small, everything is Smartphone upgrades now on.
Maybe there is room for iOS, Android and Windows

, that will be a burden on developers. HTML5 isn't really ready yet, so that kind of shortcut isn't an option.