In a blog posted to Droid Life, Offringa says he currently uses an iPhone 4S and plans on getting the next iPhone. Why is Offringa living in sin? A bunch of reasons, including iMessage. He says "It's simple, works well, and it's seamlessly integrated with Messages." That's hard to argue with. I hardly get any conventional texts any more, almost all my friends are using iMessage. It's mostly reliable, it's free, and I love read receipts.
Offringa also says the apps are "vastly superior." He cites Tweetbot, Safari, Yahoo! Weather, Day One and others. He does say he likes Path and Hangouts better on Android, but says they are the exception and not the rule. I find myself in agreement there. Especially with photo apps, I find my few friends on Android wishing they had the range of choices.
Other plusses for Apple according to Offringa are iOS itself, Apple hardware and performance. The lengthy blog is a good read, and worth passing on to some of your iPhone friends who might be wavering. That's exactly what I did.