Who is the iPhone right for?

After a year of using a slippery, and greasy Samsung Galaxy S3, I've decided to keep it until the iPhone 6. But im still not sure if the iPhone is right for me. I still have a 4th Gen iPod touch and gawk at all the beautiful apps everywhere on the App Store.

As someone who cares about App quality (performance, design), phone performance, and whether my phone will feel outdated in a year, do you think an iPhone would be right for me?

Why did you get an iPhone and are you happy with it? I know it's kind of redundant to ask the Apple Core if they enjoy iPhones but I want to know the reasons you guys have them.

Thanks