I've been using an iPhone 3GS for the past three and half years now and have no reason to up-grade or change to any other brand of phone. The iPhone does everything that I need it to, I carry it within a leather flip top case (into the second one now) and I am never without it in my pocket, I've dropped it a few times without damage to it, thanks to the case, it pairs brilliantly with my Sena, and Motorola bluetooth in my cage, and all the Apple applications, music, etc, that Ive downloaded work perfectly.
We're fairly Apple orientated at home, both my sons have iPhone 4S's, my wife uses an iMac computer, I use a Mac Pro Laptop (Retina), and we all have Ipad3's, and iPods, which don't get used all that often now because so much music can be stored on our phones.
I've always been of the opinion, "if it ain't broke, don't fix it", and it ain't broke yet!!