It's not only the price. I simply don't want to have iOS devices. I like their technology and the iOS implementation, don't misunderstand me. But I won't accept a walled garden in my pocket. I have so much software installed from different sources and I like to write apps by myself, too.
Many people are only happy with unlimited possibilities. If you are restricted and not trusted as a power user, your phone is not worth to be called "smart".