Love my iPhone, have always loved my iPhone. Hate iTunes, but never use it except for putting some music on the phone.
But, as a product, the iPhone does what it is supposed to do and does it well. I'm not knocking Android, or anything else, but most people complain about the 'limitations' of the iPhone, which just isn't a factor if it does all that you want/need it to do. Good service from Verizon combined with a quality product.
I started with a iPod Touch, then got the 4s. It does a good job with all my contacts, calendar, email, and calls. The addition of the apps, and the camera are perks to me. So, I'm looking at the Plus, but may carry around a small book in my pocket for a couple of weeks to see if it will drive me nuts, in which case I'll get the regular 6 instead. Either way, after 3 years of being happy, I have no intent to change to something which may just piss me off for the next three years.