*sigh* people don't buy sports cars because they want to show they can afford it though sure there are some people who do it because of that too, but that doesn't mean we all buy it because of that. I have a sports car and I bought it because I want to enjoy my commute no matter when and where I go. I can't stand the slow progression from point A to B without any excitement in getting there. Even if the excitement is only minimal due to jams or what not. And also I love my sports/rally car during the winter when there is never a dull ride with all the snow etc. Yes, it's a bitch to maintain due to fuel cost and use as well as maintenance and yes I did manage to buy it therefore I could afford it, but none of those are reasons WHY I bought it.
The same goes for iPhone. Maybe to some people it's a fashion statement, but mostly it's because it's well designed and works. And I don't mean just works as a standalone unit, majority of the added value comes from seamless integration between iDevices, your laptop and your Apple TV (the more devices you have the bigger the advantages you get, clever Apple). The fact that I use iPad majority of the time I'm at home instead of the laptop is because of the comfortable use and the available content and the fact that I can close the book on the iPad and pick it up on the iPhone without having to remember where I was in the book or having to worry if my content is backed up IS worth quite a lot.
My only hope is that they don't make the iPhone 5 (or what ever it'll be called) as big as the Galaxy S III. A colleague of mine has the SIII and boy it's way too big for one hand usage. If I want a bigger screen I just pop out the iPad and use that. I'd not mind a minor increase in size as well as pulling the display to the full width and height of the phone, but it still has to be comfortable in hand. I used to wear a cover on the iPhone 4 until waiting for some crap to compile I was fiddling with the cover and after about 6 months with the cover tried the phone in my hand without it. Damn that phone felt comfortable in my hand. It may seem like an innocent additional few mm, but it WAS much better without so I've never put the cover back on again.