Was given an original after my brother-in-law upgraded to a 3G. Hooked from then on (original, 3G, 4, 4S, 5). Of course, that was back when Android truly wasn't much of a competitor. Once you start curating apps it's all over. That and almost my entire family and extended has iOS devices so Messaging and PhotoStream Sharing is a major factor. It would cost me a considerable amount to switch to an Android based device. The costly apps I'd have to replace, upping the texting plan, and I still wouldn't meet feature parity. Plus the iPhone retains so much of it's original value that selling it to fund a new one is a no brainer.
iOS 7 is so good now that a lot of the lacking features iOS 6 had are now there (Control Center, more flexible backgrounding API's, app to app sharing, etc.) so it's not nearly as attractive as it was earlier last year.
What do I wish it could do that it can't?
- Expanded memory slot (64GB for the largest iPhone just isn't enough with 1080p videos being recorded and games consistently being over 1GB in size)
- Stereo speakers (seriously getting of tired of cupping one hand around the speaker to hear)
- Separate media volume control (why must I turn up the volume to hear texts after I watched something?)