WHAT ARE THE DISADVANTAGES OF USING ALTERNATIVES TO OBJECTIVE-C FOR IPHONE DEVELOPMENT?

I wish to get in to iPhone development, but I have an critical question. There have been copiousness of pick to Objective-C, but the genuine subject is, because WOULDN’T I have make have use of of of them? Let’s take Titanium for example. It can be used to emanate local applications for mixed platforms, and not only the iPhone. Wouldn’t it be most improved to sense to have make have use of of of which instead? Are they reduction flexible/powerful? What’s the commission of iPhone developers which without delay have make have use of of of Objective-C to have their apps?