iOS is closed enough that you're entirely at the mercy of the behavior of a single company. .Net is at least nominally open source so at the end of the day if M

iOS is closed enough that you're entirely at the mercy of the behavior of a single company. .Net is at least nominally open source so at the end of the day if Microsoft does something unacceptable with it you can take your ball and go somewhere else. Personally I avoid closed technologies for that reason but if it doesn't bother you then you should do what you want.